ch5_3.c

C语言程序设计 冶金工业出版社 刘怀亮

/*ch5_3*/
/*编写一程序，从键盘上输入1个表示年份year的4位十进制数，判断其是否闰年*/
#include<stdio.h>	
main()
{
    int year,leap=0;		  /* leap=0：预置为非闰年*/
    printf("Please input the year:");
    scanf("%d",&year);
    if (year % 4==0)      
         {if (year % 100 != 0) leap=1;}
    else      
         {if (year%400==0) leap=1; }
    if (leap)   
         printf("%d is a leap year.\n",year);
    else   
         printf("%d is not a leap year.\n",year);
}