C语言判断闰年程序

#include <stdio.h>

int main() { int year;

printf('请输入一个年份: ');
scanf('%d', &year);

if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
    printf('%d年是闰年\n', year);
} else {
    printf('%d年不是闰年\n', year);
}

return 0;

}