#include <stdio.h>
int binary(int);
int main() {
   int num,bin;
   printf("enter a decimal number:");
   scanf("%d",&num);
   bin=binary(num);
   printf("the binary rquivalent of %d %d",num,bin);
   
}
int binary(int num)
{
    if(num==0)
    {
        return 0;
    
    }
    else 
    {
        return (num%2)+10*binary(num/2);
    }
}