Recursive and non-recursive output every bit of any integer

recursion

#include<stdio.h>
#include<stdlib.h>
void prt_bit(int num)
{
	if(num>9)
	{
		prt_bit(num/10);
	}
	printf("%d ",num%10);
}
intmain()
{
	int num = 0;
	printf("Please enter an integer\n");
	scanf("%d",&num);
	prt_bit(num);
	system("pause");
	return 0;
}

non-recursive

#include<stdio.h>
#include<stdlib.h>
intmain()
{
 int num = 0;
 printf("Please enter an integer:\n");
 scanf("%d",&num);
 while(num)
 {
       if(num<0)
       {
        num=-num;
       }
     printf("%d   ",num%10);
     num=num/10;
 }
system("pause");
return 0;
}