开博第一篇

#include "stdio.h"
#include "stdlib.h"

int main(int argc,char **argv)
{
 int i;
 
 printf("This is 'while loop' :\n");
 i = 3;
 while (--i != 0)
  printf("%d\t",i);
 printf("\n");

 i = 3;
 while (i-- != 0)
  printf("%d\t",i);
 printf("\n\n");
 
 printf("This is 'for loop' :\n");
 i = 3;
 for (i;i>0;i--)
  printf("%d\t",i);
 printf("\n");

 i = 3;
 for (i;i>0;--i)
  printf("%d\t",i);
 printf("\n");
 
 return 0;
}