判断闰年日期

2547102118秦馨悦

class Date {
protected:
int y, mon, d;
public:
Date(int y = 2000, int mon = 1, int d = 1) : y(y), mon(mon), d(d) {}
void display() {
printf("%d-%02d-%02d\n", y, mon, d);
}
void setDate(int y, int mon, int d) {
this->y = y; this->mon = mon; this->d = d;
}
// 辅助：判断闰年
bool isLeap(int year) {
return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
}
// 辅助：获取当月天数
int getDays(int year, int month) {
if (month == 2) return isLeap(year) ? 29 : 28;
if (month == 4 || month == 6 || month == 9 || month == 11) return 30;
return 31;
}
// 日期增加1天
void addOneDay() {
d++;
if (d > getDays(y, mon)) {
d = 1;
mon++;
if (mon > 12) {
mon = 1;
y++;
}
}
}
};