if(year%4==0&&year%100!=0||year%400==0)
{
printf("%s\n","今年是平年");
}
else
printf("%s\n","今年是闰年");
if((year%4==0&&year%100!=0)||year%400==0) //加这样的括号 { printf("%s\n","今年是平年"); } else { printf("%s\n","今年是闰年"); }