if((year%4==0&&year100!=0)||year%400==0)
printf("%s\n","今年是闰年");
printf("%s\n""今年是平年");
if-else语句用错了
if(year%4==0&&year%100!=0||year%400==0) { printf("今年是闰年"); } else { printf("今年是平年"); }
多谢指教!