判断闰年 https://www.zhihu.com/question/25388501
#include<bits/stdc++.h>
using namespace std;
// 判断是否是闰年,闰年2月29天,平年2月28天
int is_leap_year(int year){
if((year%4==0 && year%100!=0) || (year%400==0)){
return 29;
}else{
return 28;
}
}
// 定义月份
int days[] = {31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int main(){
string str;
int year, month, day,count;
while(getline(cin,str)){
count = 0;
int pos = str.find(' ', 0);
year = stoi(str.substr(0, pos));
int flag = pos + 1;
pos = str.find(' ', flag);
month = stoi(str.substr(flag, pos - flag));
day = stoi(str.substr(pos+1));
days[1] = is_leap_year(year);
for (int i = 0; i < month-1;i++){
count += days[i];
}
count += day;
cout << count << endl;
}
return 0;
}