Question

用c语言编写代码，实现闰年的判断？

请在下列代码中补充子函数，包括函数声明和函数定义，主函数中调用判断闰年子函数，通过主函数将年份传递到子函数中。
#include<stdio.h>
int main()
{
int year;
printf(“请输入需判断的年份：");
scanf("%d",&year);
leapyear(year);
return 0;
}

Answer 1

#include<stdio.h>

void leapyear(int y)

{ printf("%d年%s是闰年\n",y,y%4==0&&y%100||y%400==0?"":"不");

}

int main()

{ int year;

  printf("请输入需判断的年份：");

  scanf("%d",&year);

  leapyear(year);

  return 0;

}

Answer 2

int leapyear(int);

int leapyear(int year)
{
if( (year%4==0&&year%100!=0) || year%400==0 )
{printf("%d is leapyear!", year);return 1;}
else
{printf("%d is not leapyear!", year);return 0;}
}