A leap year is a year that is divisible by 4 but not 100 or divisible by 400!
And (&&): Both conditions must be correct
or (||): Two conditions, one of which is correct is correct
#include<stdio.h>
int main()
{
int year;
printf("输入年份");
scanf("%d", &year);
if ((year % 10 == 0 && year % 100 != 0) || year % 400 == 0)
{
printf("%d是闰年", year);
}
else printf("%d不是闰年", year);
return 0;
}