Binary to integer

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>

5. int binary_conversion(int);

6. int main()

7. {

8.    int num, bin;

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

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

11.    bin = binary_conversion(num);

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

13. }

14. int binary_conversion(int num)

15. {

16.     if (num == 0)

17.     {

18.         return 0;

19.     }

20.     else

21.     {

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

23.     }

24. }

25. }

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$ gcc binary_recr.c -o binary_recr
$ a.out
Enter a decimal number: 10
The binary equivalent of 10 is 1010

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