Recursive Function in C to Convert Decimal number to Binary

Write a program to convert the given decimal number into equivalent binary number using recursion.

Program:

#include <stdio.h>

int dec2bin(int a)

{

               if(a>1)

                      dec2bin(a/2);

               printf("%d\t",a%2);

}

main()

{

               int n;

               printf("enter a number");

               scanf("%d",&n);

               dec2bin(n);

}

Output:

Decimal to Binary Using Loops

#include <stdio.h>

int main()

{

int n,ans=0,p=1,r;

scanf("%d",&n);

while(n>0)

{

r=n%2;

n=n/2;

ans=ans+p*r;

p=p*10;

}

printf("%d",ans);

}