mirror of https://github.com/TheAlgorithms/C
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/**
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* @brief Octal to binay conversion by scanning user input
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* @details
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* The octalTobinary function take the octal number as long
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* return a long binary nuber after conversion
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* @author [Vishnu P](https://github.com/vishnu0pothan)
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*/
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#include <math.h>
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#include <stdio.h>
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/**
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* @brief Converet octal number to binary
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* @param octalnum octal value that need to convert
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* @returns A binary number after conversion
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*/
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long octalToBinary(int octalnum)
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{
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int decimalnum = 0, i = 0;
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long binarynum = 0;
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/* This loop converts octal number "octalnum" to the
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* decimal number "decimalnum"
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*/
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while (octalnum != 0)
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{
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decimalnum = decimalnum + (octalnum % 10) * pow(8, i);
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i++;
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octalnum = octalnum / 10;
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}
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// i is re-initialized
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i = 1;
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/* This loop converts the decimal number "decimalnum" to the binary
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* number "binarynum"
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*/
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while (decimalnum != 0)
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{
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binarynum = binarynum + (long)(decimalnum % 2) * i;
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decimalnum = decimalnum / 2;
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i = i * 10;
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}
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// Returning the binary number that we got from octal number
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return binarynum;
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}
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/**
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* @brief Main function
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* @returns 0 on exit
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*/
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int main()
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{
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int octalnum;
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printf("Enter an octal number: ");
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scanf("%d", &octalnum);
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// Calling the function octaltoBinary
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printf("Equivalent binary number is: %ld", octalToBinary(octalnum));
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return 0;
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}
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