#include <stdio.h>
void main()
{
int year;
if(scanf("%d",&year)==1)
{
if(year%4==0 && (year%100!=0 || year%400==0))
printf("%d is a leap year\n",year);
else
printf("%d is not a leap year\n",year);
}
else
printf("Error\n");
getch();
}
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追答if(scanf("%d",&year))默认 如果scanf("%d",&year)返回1则if括号内内容调用成功 if语句返回true
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