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* add decimal_to_binary_recursion.c
* updating DIRECTORY.md
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39 lines
892 B
C
39 lines
892 B
C
/**
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* @file
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* @brief Convert decimal to binary using recursion algorithm
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*/
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#include <assert.h>
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/**
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* Decimal to binary using recursion algorithm.
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* For example, if number = 5, the function returns the decimal integer 101.
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* @param number positive integer number to convert
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* @returns integer with digits representing binary value representation of
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* number.
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*/
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int decimal_to_binary(unsigned int number)
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{
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return number == 0 ? 0 : number % 2 + 10 * decimal_to_binary(number / 2);
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}
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/** Test function */
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void test()
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{
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const int sets[][2] = {
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{0, 0}, {1, 1}, {2, 10}, {3, 11}, {4, 100}, {6, 110}, {7, 111},
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/* add more data sets to test */
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};
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for (int i = 0, size = sizeof(sets) / sizeof(sets[0]); i < size; ++i)
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{
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assert(decimal_to_binary(sets[i][0]) == sets[i][1]);
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}
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}
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/** Driver Code */
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int main()
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{
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test();
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return 0;
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}
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