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< p > < a href = "https://en.wikipedia.org/wiki/Prim%27s_algorithm" target = "_blank" > Prim's algorithm< / a > implementation in C to find the MST of a weighted, connected graph.
< a href = "#details" > More...< / a > < / p >
< div class = "textblock" > < code > #include < stdio.h> < / code > < br / >
< code > #include < string.h> < / code > < br / >
< code > #include < assert.h> < / code > < br / >
< code > #include < inttypes.h> < / code > < br / >
< / div > < div class = "textblock" > < div class = "dynheader" >
Include dependency graph for prim.c:< / div >
< div class = "dyncontent" >
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< div class = "center" > < iframe scrolling = "no" frameborder = "0" src = "../../de/d1c/prim_8c__incl.svg" width = "360" height = "110" > < p > < b > This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.< / b > < / p > < / iframe >
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< / div >
< / div > < table class = "memberdecls" >
< tr class = "heading" > < td colspan = "2" > < h2 class = "groupheader" > < a id = "define-members" name = "define-members" > < / a >
Macros< / h2 > < / td > < / tr >
< tr class = "memitem:a392fb874e547e582e9c66a08a1f23326" > < td class = "memItemLeft" align = "right" valign = "top" > #define  < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a >       20< / td > < / tr >
< tr class = "memdesc:a392fb874e547e582e9c66a08a1f23326" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > for IO operations < a href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > More...< / a > < br / > < / td > < / tr >
< tr class = "separator:a392fb874e547e582e9c66a08a1f23326" > < td class = "memSeparator" colspan = "2" >   < / td > < / tr >
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#define  < / td > < td class = "memItemRight" valign = "bottom" > < b > INF< / b >       999< / td > < / tr >
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Functions< / h2 > < / td > < / tr >
< tr class = "memitem:a72ec66b10f86d67064d34f2b2717fdfc" > < td class = "memItemLeft" align = "right" valign = "top" > uint16_t  < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "../../d9/dcc/prim_8c.html#a72ec66b10f86d67064d34f2b2717fdfc" > minimum< / a > (uint16_t arr[], uint16_t N)< / td > < / tr >
< tr class = "memdesc:a72ec66b10f86d67064d34f2b2717fdfc" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > Finds index of minimum element in edge list for an arbitrary vertex. < a href = "../../d9/dcc/prim_8c.html#a72ec66b10f86d67064d34f2b2717fdfc" > More...< / a > < br / > < / td > < / tr >
< tr class = "separator:a72ec66b10f86d67064d34f2b2717fdfc" > < td class = "memSeparator" colspan = "2" >   < / td > < / tr >
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< tr class = "memitem:a0bea087eb586c437cf0a667f794c8853" > < td class = "memItemLeft" align = "right" valign = "top" > void  < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "../../d9/dcc/prim_8c.html#a0bea087eb586c437cf0a667f794c8853" > prim< / a > (uint16_t G[][< a class = "el" href = "../../dd/d93/client_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], uint16_t MST[][< a class = "el" href = "../../dd/d93/client_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], uint16_t V)< / td > < / tr >
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< tr class = "memdesc:a0bea087eb586c437cf0a667f794c8853" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > Used to find MST of user-generated adj matrix G. < a href = "../../d9/dcc/prim_8c.html#a0bea087eb586c437cf0a667f794c8853" > More...< / a > < br / > < / td > < / tr >
< tr class = "separator:a0bea087eb586c437cf0a667f794c8853" > < td class = "memSeparator" colspan = "2" >   < / td > < / tr >
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< tr class = "memitem:aff3f4c22009b2aa4e385a76a8a1cdc1c" > < td class = "memItemLeft" align = "right" valign = "top" > static void  < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "../../d9/dcc/prim_8c.html#aff3f4c22009b2aa4e385a76a8a1cdc1c" > test< / a > (uint16_t G[][< a class = "el" href = "../../dd/d93/client_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], uint16_t MST[][< a class = "el" href = "../../dd/d93/client_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], uint16_t V)< / td > < / tr >
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< tr class = "memdesc:aff3f4c22009b2aa4e385a76a8a1cdc1c" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > Self-test implementations. < a href = "../../d9/dcc/prim_8c.html#aff3f4c22009b2aa4e385a76a8a1cdc1c" > More...< / a > < br / > < / td > < / tr >
< tr class = "separator:aff3f4c22009b2aa4e385a76a8a1cdc1c" > < td class = "memSeparator" colspan = "2" >   < / td > < / tr >
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< tr class = "memitem:addac7a8c7bfd3e5573dad1f6aeff7768" > < td class = "memItemLeft" align = "right" valign = "top" > void  < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "../../d9/dcc/prim_8c.html#addac7a8c7bfd3e5573dad1f6aeff7768" > user_graph< / a > (uint16_t G[][< a class = "el" href = "../../dd/d93/client_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], uint16_t MST[][< a class = "el" href = "../../dd/d93/client_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], uint16_t V)< / td > < / tr >
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< tr class = "memdesc:addac7a8c7bfd3e5573dad1f6aeff7768" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > Function < a class = "el" href = "../../d9/dcc/prim_8c.html#addac7a8c7bfd3e5573dad1f6aeff7768" title = "Function user_graph(); gets user input adj." > user_graph()< / a > ; gets user input adj. < a href = "../../d9/dcc/prim_8c.html#addac7a8c7bfd3e5573dad1f6aeff7768" > More...< / a > < br / > < / td > < / tr >
< tr class = "separator:addac7a8c7bfd3e5573dad1f6aeff7768" > < td class = "memSeparator" colspan = "2" >   < / td > < / tr >
< tr class = "memitem:abf9e6b7e6f15df4b525a2e7705ba3089" > < td class = "memItemLeft" align = "right" valign = "top" > int  < / td > < td class = "memItemRight" valign = "bottom" > < a class = "el" href = "../../d9/dcc/prim_8c.html#abf9e6b7e6f15df4b525a2e7705ba3089" > main< / a > (int argc, char const *argv[])< / td > < / tr >
< tr class = "memdesc:abf9e6b7e6f15df4b525a2e7705ba3089" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > Main function. < a href = "../../d9/dcc/prim_8c.html#abf9e6b7e6f15df4b525a2e7705ba3089" > More...< / a > < br / > < / td > < / tr >
< tr class = "separator:abf9e6b7e6f15df4b525a2e7705ba3089" > < td class = "memSeparator" colspan = "2" >   < / td > < / tr >
< / table >
< a name = "details" id = "details" > < / a > < h2 class = "groupheader" > Detailed Description< / h2 >
< div class = "textblock" > < p > < a href = "https://en.wikipedia.org/wiki/Prim%27s_algorithm" target = "_blank" > Prim's algorithm< / a > implementation in C to find the MST of a weighted, connected graph. < / p >
< dl class = "section author" > < dt > Author< / dt > < dd > < a href = "https://github.com/sl1mb0" target = "_blank" > Timothy Maloney< / a > < / dd > < / dl >
< p > Prim's algorithm uses a greedy approach to generate the MST of a weighted connected graph. The algorithm begins at an arbitrary vertex v, and selects a next vertex u, where v and u are connected by a weighted edge whose weight is the minimum of all edges connected to v. @references Page 319 "Introduction to the Design and Analysis of Algorithms" - Anany Levitin< / p >
< p > To test - run './prim -test' < a class = "el" href = "../../d9/dcc/prim_8c.html#a0bea087eb586c437cf0a667f794c8853" title = "Used to find MST of user-generated adj matrix G." > prim()< / a > will find the MST of the following adj. matrix:< / p >
< p > 0 1 2 3 1 0 4 6 2 4 0 5 3 6 5 0< / p >
< p > The minimum spanning tree for the above weighted connected graph is given by the following adj matrix:< / p >
< p > 0 1 2 3 1 0 0 0 2 0 0 0 3 0 0 0< / p >
< p > The following < a href = "https://visualgo.net/en/mst" target = "_blank" > link< / a > provides a visual representation of graphs that can be used to test/verify the algorithm for different adj matrices and their weighted, connected graphs. < / p >
< / div > < h2 class = "groupheader" > Macro Definition Documentation< / h2 >
< a id = "a392fb874e547e582e9c66a08a1f23326" name = "a392fb874e547e582e9c66a08a1f23326" > < / a >
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< h2 class = "memtitle" > < span class = "permalink" > < a href = "#a392fb874e547e582e9c66a08a1f23326" > ◆   < / a > < / span > MAX< / h2 >
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< div class = "memitem" >
< div class = "memproto" >
< table class = "memname" >
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< td class = "memname" > #define MAX      20< / td >
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< / table >
< / div > < div class = "memdoc" >
< p > for IO operations < / p >
< p > for string comparison for assert() for uint16_t < / p >
< / div >
< / div >
< h2 class = "groupheader" > Function Documentation< / h2 >
< a id = "abf9e6b7e6f15df4b525a2e7705ba3089" name = "abf9e6b7e6f15df4b525a2e7705ba3089" > < / a >
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< h2 class = "memtitle" > < span class = "permalink" > < a href = "#abf9e6b7e6f15df4b525a2e7705ba3089" > ◆   < / a > < / span > main()< / h2 >
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< div class = "memitem" >
< div class = "memproto" >
< table class = "memname" >
< tr >
< td class = "memname" > int main < / td >
< td > (< / td >
< td class = "paramtype" > int  < / td >
< td class = "paramname" > < em > argc< / em > , < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > char const *  < / td >
< td class = "paramname" > < em > argv< / em > []  < / td >
< / tr >
< tr >
< td > < / td >
< td > )< / td >
< td > < / td > < td > < / td >
< / tr >
< / table >
< / div > < div class = "memdoc" >
< p > Main function. < / p >
< dl class = "params" > < dt > Parameters< / dt > < dd >
< table class = "params" >
< tr > < td class = "paramname" > argc< / td > < td > commandline argument count (ignored) < / td > < / tr >
< tr > < td class = "paramname" > argv< / td > < td > commandline array of arguments (ignored) < / td > < / tr >
< / table >
< / dd >
< / dl >
< dl class = "section return" > < dt > Returns< / dt > < dd > 0 on exit < / dd > < / dl >
< p > < weighted, connected graph G< / p >
< p > < adj matrix to hold minimum spanning tree of G< / p >
< p > < number of vertices in V in G< / p >
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< div class = "fragment" > < div class = "line" > < span class = "lineno" > 186< / span > { < / div >
< div class = "line" > < span class = "lineno" > 187< / span > < / div >
< div class = "line" > < span class = "lineno" > 188< / span > uint16_t G[< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ][< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ]; < span class = "comment" > ///< weighted, connected graph G< / span > < / div >
< div class = "line" > < span class = "lineno" > 189< / span > uint16_t MST[< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ][< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ]; < span class = "comment" > ///< adj matrix to hold minimum spanning tree of G< / span > < / div >
< div class = "line" > < span class = "lineno" > 190< / span > uint16_t V; < span class = "comment" > ///< number of vertices in V in G< / span > < / div >
< div class = "line" > < span class = "lineno" > 191< / span > < / div >
< div class = "line" > < span class = "lineno" > 192< / span > < / div >
< div class = "line" > < span class = "lineno" > 193< / span > < span class = "keywordflow" > if< / span > (argc == 2 & & strcmp(argv[1],< span class = "stringliteral" > " -test" < / span > ) == 0)< / div >
< div class = "line" > < span class = "lineno" > 194< / span > {< / div >
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< div class = "line" > < span class = "lineno" > 195< / span > < a class = "code hl_function" href = "../../d1/dba/decimal__to__any__base_8c.html#aa8dca7b867074164d5f45b0f3851269d" > test< / a > (& (*G),& (*MST),V);< / div >
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< div class = "line" > < span class = "lineno" > 196< / span > }< / div >
< div class = "line" > < span class = "lineno" > 197< / span > < span class = "keywordflow" > else< / span > < / div >
< div class = "line" > < span class = "lineno" > 198< / span > {< / div >
< div class = "line" > < span class = "lineno" > 199< / span > < a class = "code hl_function" href = "../../d9/dcc/prim_8c.html#addac7a8c7bfd3e5573dad1f6aeff7768" > user_graph< / a > (& (*G),& (*MST),V);< / div >
< div class = "line" > < span class = "lineno" > 200< / span > }< / div >
< div class = "line" > < span class = "lineno" > 201< / span > < / div >
< div class = "line" > < span class = "lineno" > 202< / span > < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < span class = "lineno" > 203< / span > }< / div >
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< div class = "ttc" id = "adecimal__to__any__base_8c_html_aa8dca7b867074164d5f45b0f3851269d" > < div class = "ttname" > < a href = "../../d1/dba/decimal__to__any__base_8c.html#aa8dca7b867074164d5f45b0f3851269d" > test< / a > < / div > < div class = "ttdeci" > static void test()< / div > < div class = "ttdoc" > Self-test implementations.< / div > < div class = "ttdef" > < b > Definition:< / b > decimal_to_any_base.c:94< / div > < / div >
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< div class = "ttc" id = "aprim_8c_html_a392fb874e547e582e9c66a08a1f23326" > < div class = "ttname" > < a href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > < / div > < div class = "ttdeci" > #define MAX< / div > < div class = "ttdoc" > for IO operations< / div > < div class = "ttdef" > < b > Definition:< / b > prim.c:36< / div > < / div >
< div class = "ttc" id = "aprim_8c_html_addac7a8c7bfd3e5573dad1f6aeff7768" > < div class = "ttname" > < a href = "../../d9/dcc/prim_8c.html#addac7a8c7bfd3e5573dad1f6aeff7768" > user_graph< / a > < / div > < div class = "ttdeci" > void user_graph(uint16_t G[][MAX], uint16_t MST[][MAX], uint16_t V)< / div > < div class = "ttdoc" > Function user_graph(); gets user input adj.< / div > < div class = "ttdef" > < b > Definition:< / b > prim.c:145< / div > < / div >
< / div > <!-- fragment --> < div class = "dynheader" >
Here is the call graph for this function:< / div >
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< div class = "center" > < iframe scrolling = "no" frameborder = "0" src = "../../d9/dcc/prim_8c_abf9e6b7e6f15df4b525a2e7705ba3089_cgraph.svg" width = "543" height = "232" > < p > < b > This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.< / b > < / p > < / iframe >
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< / div >
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< a id = "a72ec66b10f86d67064d34f2b2717fdfc" name = "a72ec66b10f86d67064d34f2b2717fdfc" > < / a >
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< h2 class = "memtitle" > < span class = "permalink" > < a href = "#a72ec66b10f86d67064d34f2b2717fdfc" > ◆   < / a > < / span > minimum()< / h2 >
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< div class = "memitem" >
< div class = "memproto" >
< table class = "memname" >
< tr >
< td class = "memname" > uint16_t minimum < / td >
< td > (< / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > arr< / em > [], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > N< / em >   < / td >
< / tr >
< tr >
< td > < / td >
< td > )< / td >
< td > < / td > < td > < / td >
< / tr >
< / table >
< / div > < div class = "memdoc" >
< p > Finds index of minimum element in edge list for an arbitrary vertex. < / p >
< dl class = "params" > < dt > Parameters< / dt > < dd >
< table class = "params" >
< tr > < td class = "paramname" > arr< / td > < td > graph row < / td > < / tr >
< tr > < td class = "paramname" > N< / td > < td > number of elements in arr < / td > < / tr >
< / table >
< / dd >
< / dl >
< dl class = "section return" > < dt > Returns< / dt > < dd > index of minimum element in arr < / dd > < / dl >
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< div class = "fragment" > < div class = "line" > < span class = "lineno" > 46< / span > {< / div >
< div class = "line" > < span class = "lineno" > 47< / span > uint16_t index = 0;< / div >
< div class = "line" > < span class = "lineno" > 48< / span > uint16_t < a class = "code hl_define" href = "../../d1/d6b/group__kohonen__2d.html#gac6afabdc09a49a433ee19d8a9486056d" > min< / a > = INF;< / div >
< div class = "line" > < span class = "lineno" > 49< / span > < / div >
< div class = "line" > < span class = "lineno" > 50< / span > < span class = "keywordflow" > for< / span > (uint16_t i = 0; i < N; i++)< / div >
< div class = "line" > < span class = "lineno" > 51< / span > {< / div >
< div class = "line" > < span class = "lineno" > 52< / span > < span class = "keywordflow" > if< / span > (arr[i] < < a class = "code hl_define" href = "../../d1/d6b/group__kohonen__2d.html#gac6afabdc09a49a433ee19d8a9486056d" > min< / a > )< / div >
< div class = "line" > < span class = "lineno" > 53< / span > {< / div >
< div class = "line" > < span class = "lineno" > 54< / span > < a class = "code hl_define" href = "../../d1/d6b/group__kohonen__2d.html#gac6afabdc09a49a433ee19d8a9486056d" > min< / a > = arr[i];< / div >
< div class = "line" > < span class = "lineno" > 55< / span > index = i;< / div >
< div class = "line" > < span class = "lineno" > 56< / span > }< / div >
< div class = "line" > < span class = "lineno" > 57< / span > }< / div >
< div class = "line" > < span class = "lineno" > 58< / span > < span class = "keywordflow" > return< / span > index;< / div >
< div class = "line" > < span class = "lineno" > 59< / span > }< / div >
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< div class = "ttc" id = "agroup__kohonen__2d_html_gac6afabdc09a49a433ee19d8a9486056d" > < div class = "ttname" > < a href = "../../d1/d6b/group__kohonen__2d.html#gac6afabdc09a49a433ee19d8a9486056d" > min< / a > < / div > < div class = "ttdeci" > #define min(a, b)< / div > < div class = "ttdoc" > shorthand for minimum value< / div > < div class = "ttdef" > < b > Definition:< / b > kohonen_som_topology.c:43< / div > < / div >
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< h2 class = "memtitle" > < span class = "permalink" > < a href = "#a0bea087eb586c437cf0a667f794c8853" > ◆   < / a > < / span > prim()< / h2 >
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< div class = "memitem" >
< div class = "memproto" >
< table class = "memname" >
< tr >
< td class = "memname" > void prim < / td >
< td > (< / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > G< / em > [][MAX], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > MST< / em > [][MAX], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > V< / em >   < / td >
< / tr >
< tr >
< td > < / td >
< td > )< / td >
< td > < / td > < td > < / td >
< / tr >
< / table >
< / div > < div class = "memdoc" >
< p > Used to find MST of user-generated adj matrix G. < / p >
< dl class = "section return" > < dt > Returns< / dt > < dd > void < / dd > < / dl >
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< div class = "fragment" > < div class = "line" > < span class = "lineno" > 66< / span > {< / div >
< div class = "line" > < span class = "lineno" > 67< / span > uint16_t u, v;< / div >
< div class = "line" > < span class = "lineno" > 68< / span > uint16_t E_t[< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], path[< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ];< / div >
< div class = "line" > < span class = "lineno" > 69< / span > uint16_t V_t[< a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > ], no_of_edges;< / div >
< div class = "line" > < span class = "lineno" > 70< / span > < / div >
< div class = "line" > < span class = "lineno" > 71< / span > E_t[0] = 0; < span class = "comment" > // edges for current vertex< / span > < / div >
< div class = "line" > < span class = "lineno" > 72< / span > V_t[0] = 1; < span class = "comment" > // list of visited vertices< / span > < / div >
< div class = "line" > < span class = "lineno" > 73< / span > < / div >
< div class = "line" > < span class = "lineno" > 74< / span > < span class = "keywordflow" > for< / span > (uint16_t i = 1; i < V; i++)< / div >
< div class = "line" > < span class = "lineno" > 75< / span > {< / div >
< div class = "line" > < span class = "lineno" > 76< / span > E_t[i] = G[i][0];< / div >
< div class = "line" > < span class = "lineno" > 77< / span > path[i] = 0;< / div >
< div class = "line" > < span class = "lineno" > 78< / span > V_t[i] = 0;< / div >
< div class = "line" > < span class = "lineno" > 79< / span > }< / div >
< div class = "line" > < span class = "lineno" > 80< / span > < / div >
< div class = "line" > < span class = "lineno" > 81< / span > no_of_edges = V - 1;< / div >
< div class = "line" > < span class = "lineno" > 82< / span > < / div >
< div class = "line" > < span class = "lineno" > 83< / span > < span class = "keywordflow" > while< / span > (no_of_edges > 0)< / div >
< div class = "line" > < span class = "lineno" > 84< / span > {< / div >
< div class = "line" > < span class = "lineno" > 85< / span > u = < a class = "code hl_function" href = "../../d9/dcc/prim_8c.html#a72ec66b10f86d67064d34f2b2717fdfc" > minimum< / a > (E_t, V);< / div >
< div class = "line" > < span class = "lineno" > 86< / span > < span class = "keywordflow" > while< / span > (V_t[u] == 1)< / div >
< div class = "line" > < span class = "lineno" > 87< / span > {< / div >
< div class = "line" > < span class = "lineno" > 88< / span > E_t[u] = INF;< / div >
< div class = "line" > < span class = "lineno" > 89< / span > u = < a class = "code hl_function" href = "../../d9/dcc/prim_8c.html#a72ec66b10f86d67064d34f2b2717fdfc" > minimum< / a > (E_t, V);< / div >
< div class = "line" > < span class = "lineno" > 90< / span > }< / div >
< div class = "line" > < span class = "lineno" > 91< / span > < / div >
< div class = "line" > < span class = "lineno" > 92< / span > v = path[u];< / div >
< div class = "line" > < span class = "lineno" > 93< / span > MST[v][u] = E_t[u];< / div >
< div class = "line" > < span class = "lineno" > 94< / span > MST[u][v] = E_t[u];< / div >
< div class = "line" > < span class = "lineno" > 95< / span > no_of_edges--;< / div >
< div class = "line" > < span class = "lineno" > 96< / span > V_t[u] = 1;< / div >
< div class = "line" > < span class = "lineno" > 97< / span > < / div >
< div class = "line" > < span class = "lineno" > 98< / span > < span class = "keywordflow" > for< / span > (uint16_t i = 1; i < V; i++)< / div >
< div class = "line" > < span class = "lineno" > 99< / span > {< / div >
< div class = "line" > < span class = "lineno" > 100< / span > < span class = "keywordflow" > if< / span > (V_t[i] == 0 & & G[u][i] < E_t[i])< / div >
< div class = "line" > < span class = "lineno" > 101< / span > {< / div >
< div class = "line" > < span class = "lineno" > 102< / span > E_t[i] = G[u][i];< / div >
< div class = "line" > < span class = "lineno" > 103< / span > path[i] = v;< / div >
< div class = "line" > < span class = "lineno" > 104< / span > }< / div >
< div class = "line" > < span class = "lineno" > 105< / span > }< / div >
< div class = "line" > < span class = "lineno" > 106< / span > }< / div >
< div class = "line" > < span class = "lineno" > 107< / span > }< / div >
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< div class = "ttc" id = "aprim_8c_html_a72ec66b10f86d67064d34f2b2717fdfc" > < div class = "ttname" > < a href = "../../d9/dcc/prim_8c.html#a72ec66b10f86d67064d34f2b2717fdfc" > minimum< / a > < / div > < div class = "ttdeci" > uint16_t minimum(uint16_t arr[], uint16_t N)< / div > < div class = "ttdoc" > Finds index of minimum element in edge list for an arbitrary vertex.< / div > < div class = "ttdef" > < b > Definition:< / b > prim.c:45< / div > < / div >
< / div > <!-- fragment --> < div class = "dynheader" >
Here is the call graph for this function:< / div >
< div class = "dyncontent" >
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< div class = "center" > < iframe scrolling = "no" frameborder = "0" src = "../../d9/dcc/prim_8c_a0bea087eb586c437cf0a667f794c8853_cgraph.svg" width = "180" height = "36" > < p > < b > This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.< / b > < / p > < / iframe >
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< / div >
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< a id = "aff3f4c22009b2aa4e385a76a8a1cdc1c" name = "aff3f4c22009b2aa4e385a76a8a1cdc1c" > < / a >
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< h2 class = "memtitle" > < span class = "permalink" > < a href = "#aff3f4c22009b2aa4e385a76a8a1cdc1c" > ◆   < / a > < / span > test()< / h2 >
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< div class = "memitem" >
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< td class = "memname" > static void test < / td >
< td > (< / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > G< / em > [][MAX], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > MST< / em > [][MAX], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > V< / em >   < / td >
< / tr >
< tr >
< td > < / td >
< td > )< / td >
< td > < / td > < td > < / td >
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< td class = "mlabels-right" >
< span class = "mlabels" > < span class = "mlabel" > static< / span > < / span > < / td >
< / tr >
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< / div > < div class = "memdoc" >
< p > Self-test implementations. < / p >
< dl class = "section return" > < dt > Returns< / dt > < dd > void < / dd > < / dl >
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< div class = "fragment" > < div class = "line" > < span class = "lineno" > 114< / span > {< / div >
< div class = "line" > < span class = "lineno" > 115< / span > < / div >
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< div class = "line" > < span class = "lineno" > 116< / span > uint16_t < a class = "code hl_function" href = "../../d1/dba/decimal__to__any__base_8c.html#aa8dca7b867074164d5f45b0f3851269d" > test< / a > [4][4] = {{0,1,2,3},{1,0,4,6},{2,4,0,5},{3,6,5,0}};< / div >
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< div class = "line" > < span class = "lineno" > 117< / span > uint16_t solution[4][4] = {{0,1,2,3},{1,0,0,0},{2,0,0,0},{3,0,0,0}};< / div >
< div class = "line" > < span class = "lineno" > 118< / span > < / div >
< div class = "line" > < span class = "lineno" > 119< / span > V = 4;< / div >
< div class = "line" > < span class = "lineno" > 120< / span > < / div >
< div class = "line" > < span class = "lineno" > 121< / span > < span class = "keywordflow" > for< / span > (uint16_t i = 0; i < V; ++i)< / div >
< div class = "line" > < span class = "lineno" > 122< / span > {< / div >
< div class = "line" > < span class = "lineno" > 123< / span > < span class = "keywordflow" > for< / span > (uint16_t j = 0; j < V; ++j)< / div >
< div class = "line" > < span class = "lineno" > 124< / span > {< / div >
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< div class = "line" > < span class = "lineno" > 125< / span > G[i][j] = < a class = "code hl_function" href = "../../d1/dba/decimal__to__any__base_8c.html#aa8dca7b867074164d5f45b0f3851269d" > test< / a > [i][j];< / div >
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< div class = "line" > < span class = "lineno" > 126< / span > }< / div >
< div class = "line" > < span class = "lineno" > 127< / span > }< / div >
< div class = "line" > < span class = "lineno" > 128< / span > < / div >
< div class = "line" > < span class = "lineno" > 129< / span > < a class = "code hl_function" href = "../../d9/dcc/prim_8c.html#a0bea087eb586c437cf0a667f794c8853" > prim< / a > (& (*G),& (*MST),V);< / div >
< div class = "line" > < span class = "lineno" > 130< / span > < / div >
< div class = "line" > < span class = "lineno" > 131< / span > < span class = "keywordflow" > for< / span > (uint16_t i = 0; i < V; ++i)< / div >
< div class = "line" > < span class = "lineno" > 132< / span > {< / div >
< div class = "line" > < span class = "lineno" > 133< / span > < span class = "keywordflow" > for< / span > (uint16_t j = 0; j < V; ++j)< / div >
< div class = "line" > < span class = "lineno" > 134< / span > {< / div >
< div class = "line" > < span class = "lineno" > 135< / span > assert(MST[i][j] == solution[i][j]);< / div >
< div class = "line" > < span class = "lineno" > 136< / span > }< / div >
< div class = "line" > < span class = "lineno" > 137< / span > }< / div >
< div class = "line" > < span class = "lineno" > 138< / span > }< / div >
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< div class = "ttc" id = "aprim_8c_html_a0bea087eb586c437cf0a667f794c8853" > < div class = "ttname" > < a href = "../../d9/dcc/prim_8c.html#a0bea087eb586c437cf0a667f794c8853" > prim< / a > < / div > < div class = "ttdeci" > void prim(uint16_t G[][MAX], uint16_t MST[][MAX], uint16_t V)< / div > < div class = "ttdoc" > Used to find MST of user-generated adj matrix G.< / div > < div class = "ttdef" > < b > Definition:< / b > prim.c:65< / div > < / div >
< / div > <!-- fragment --> < div class = "dynheader" >
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< div class = "center" > < iframe scrolling = "no" frameborder = "0" src = "../../d9/dcc/prim_8c_aff3f4c22009b2aa4e385a76a8a1cdc1c_cgraph.svg" width = "496" height = "183" > < p > < b > This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.< / b > < / p > < / iframe >
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< / div >
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< a id = "addac7a8c7bfd3e5573dad1f6aeff7768" name = "addac7a8c7bfd3e5573dad1f6aeff7768" > < / a >
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< h2 class = "memtitle" > < span class = "permalink" > < a href = "#addac7a8c7bfd3e5573dad1f6aeff7768" > ◆   < / a > < / span > user_graph()< / h2 >
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< div class = "memitem" >
< div class = "memproto" >
< table class = "memname" >
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< td class = "memname" > void user_graph < / td >
< td > (< / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > G< / em > [][MAX], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > MST< / em > [][MAX], < / td >
< / tr >
< tr >
< td class = "paramkey" > < / td >
< td > < / td >
< td class = "paramtype" > uint16_t  < / td >
< td class = "paramname" > < em > V< / em >   < / td >
< / tr >
< tr >
< td > < / td >
< td > )< / td >
< td > < / td > < td > < / td >
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< p > Function < a class = "el" href = "../../d9/dcc/prim_8c.html#addac7a8c7bfd3e5573dad1f6aeff7768" title = "Function user_graph(); gets user input adj." > user_graph()< / a > ; gets user input adj. < / p >
< p > matrix and finds MST of that graph < / p > < dl class = "section return" > < dt > Returns< / dt > < dd > void < / dd > < / dl >
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< div class = "fragment" > < div class = "line" > < span class = "lineno" > 146< / span > {< / div >
< div class = "line" > < span class = "lineno" > 147< / span > printf(< span class = "stringliteral" > " Enter the number of vertices: " < / span > );< / div >
< div class = "line" > < span class = "lineno" > 148< / span > scanf(< span class = "stringliteral" > " %hd" < / span > , & V);< / div >
< div class = "line" > < span class = "lineno" > 149< / span > < / div >
< div class = "line" > < span class = "lineno" > 150< / span > assert(V < = < a class = "code hl_define" href = "../../d9/dcc/prim_8c.html#a392fb874e547e582e9c66a08a1f23326" > MAX< / a > );< / div >
< div class = "line" > < span class = "lineno" > 151< / span > < / div >
< div class = "line" > < span class = "lineno" > 152< / span > printf(< span class = "stringliteral" > " Enter the adj matrix\n" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 153< / span > uint16_t i, j;< / div >
< div class = "line" > < span class = "lineno" > 154< / span > < span class = "keywordflow" > for< / span > (i = 0; i < V; ++i)< / div >
< div class = "line" > < span class = "lineno" > 155< / span > {< / div >
< div class = "line" > < span class = "lineno" > 156< / span > < span class = "keywordflow" > for< / span > (j = 0; j < V; ++j)< / div >
< div class = "line" > < span class = "lineno" > 157< / span > {< / div >
< div class = "line" > < span class = "lineno" > 158< / span > printf(< span class = "stringliteral" > " G[%d][%d]: " < / span > , i, j);< / div >
< div class = "line" > < span class = "lineno" > 159< / span > scanf(< span class = "stringliteral" > " %hd" < / span > , & G[i][j]);< / div >
< div class = "line" > < span class = "lineno" > 160< / span > < span class = "keywordflow" > if< / span > (G[i][j] == 0)< / div >
< div class = "line" > < span class = "lineno" > 161< / span > G[i][j] = INF;< / div >
< div class = "line" > < span class = "lineno" > 162< / span > }< / div >
< div class = "line" > < span class = "lineno" > 163< / span > }< / div >
< div class = "line" > < span class = "lineno" > 164< / span > < / div >
< div class = "line" > < span class = "lineno" > 165< / span > < a class = "code hl_function" href = "../../d9/dcc/prim_8c.html#a0bea087eb586c437cf0a667f794c8853" > prim< / a > (& (*G),& (*MST),V);< / div >
< div class = "line" > < span class = "lineno" > 166< / span > < / div >
< div class = "line" > < span class = "lineno" > 167< / span > printf(< span class = "stringliteral" > " minimum spanning tree:\n" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 168< / span > < span class = "keywordflow" > for< / span > (i = 0; i < V; ++i)< / div >
< div class = "line" > < span class = "lineno" > 169< / span > {< / div >
< div class = "line" > < span class = "lineno" > 170< / span > printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 171< / span > < span class = "keywordflow" > for< / span > (j = 0; j < V; ++j)< / div >
< div class = "line" > < span class = "lineno" > 172< / span > {< / div >
< div class = "line" > < span class = "lineno" > 173< / span > printf(< span class = "stringliteral" > " %d\t" < / span > , MST[i][j]);< / div >
< div class = "line" > < span class = "lineno" > 174< / span > }< / div >
< div class = "line" > < span class = "lineno" > 175< / span > }< / div >
< div class = "line" > < span class = "lineno" > 176< / span > }< / div >
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< / div > <!-- fragment --> < div class = "dynheader" >
Here is the call graph for this function:< / div >
< div class = "dyncontent" >
< div class = "center" > < iframe scrolling = "no" frameborder = "0" src = "../../d9/dcc/prim_8c_addac7a8c7bfd3e5573dad1f6aeff7768_cgraph.svg" width = "315" height = "36" > < p > < b > This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.< / b > < / p > < / iframe >
< / div >
< / div >
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< / div >
< / div >
< / div > <!-- contents -->
< / div > <!-- doc - content -->
<!-- start footer part -->
< div id = "nav-path" class = "navpath" > <!-- id is needed for treeview function! -->
< ul >
< li class = "navelem" > < a class = "el" href = "../../dir_a4300992e825aa9b9238bf43160a241e.html" > greedy_approach< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../d9/dcc/prim_8c.html" > prim.c< / a > < / li >
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< li class = "footer" > Generated by < a href = "https://www.doxygen.org/index.html" > < img class = "footer" src = "../../doxygen.svg" width = "104" height = "31" alt = "doxygen" / > < / a > 1.9.5 < / li >
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< / ul >
< / div >
< / body >
< / html >
