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C Program to Print Binary Equivalent of an Integer using Recursion

This C program, using recursion, finds the binary equivalent of a decimal number entered by the user. Decimal numbers are of base 10 while binary numbers are of base 2.

Here is the source code of the C program to display a linked list in reverse. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

1. /*

2.  * C Program to Print Binary Equivalent of an Integer using Recursion

3.  */

4. #include <stdio.h>

6. int binary_conversion(int);

8. int main()

9. {

10.    int num, bin;

12.    printf("Enter a decimal number: ");

13.    scanf("%d", &num);

14.    bin = binary_conversion(num);

15.    printf("The binary equivalent of %d is %d\n", num, bin);

16. }

18. int binary_conversion(int num)

19. {

20.     if (num == 0)

21.     {

22.         return 0;

23.     }

24.     else

25.     {

26.         return (num % 2) + 10 * binary_conversion(num / 2);

27.     }

28. }}