C语言打印二进制的代码

#include"stdio.h"
#define N 32
#define M 1<<(N-1)
void print(unsigned c)    
{      
int i;   
for (i=0;i{      
   if(i%8==0)printf(" ");  
   putchar(((c&M)==0)?'0':'1');
   c<<=1;   
}      
printf("\n");   
}
int main()
{
unsigned d;
start:scanf("%u",&d);
printf("%u的二进制为:",d);
print(d);
goto start;
return 0;
}

_____________________________________________

#include
void print(unsigned int c)
{
if (c>>1) print(c>>1);
printf("%d", c&1);
}

int main()
{
unsigned int d;
while (1)
{
scanf("%u",&d);
printf("%u的二进制为:",d);
print(d);
printf("\n");
}
return 0;
}