5-5.cpp

C程序设计（第3版）程序源代码,提供你最丰富的实际代码

#include <stdio.h>
void main()
     {
      int year, leap;
      scanf("%d",&year);
      if (year%4==0)
	{if (year%100==0)
	    {if (year%400==0)
		   leap=1;
	      else leap=0;}
	  else
	      leap=1;}
    else
	    leap=0;
      if (leap)
	printf("%d is ",year);
      else
	printf("%d is not ",year);
      printf("a leap year.\n");
}