#include <bits/stdc++.h> using namespace std; int main () { int a; cin>>a; if(a%40&&a%100!=0||a%4000){ cout<<"Y"; }else{ cout<<"N"; } return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(a % 4 == 0 && a % 100 != 0 || a % 400 == 0){ cout<<"Y"; } else{ cout<<"N"; } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(a%40&&a%100!=0||a%4000){ cout<<"Y"; }else{ cout<<"N"; } return 0; }

#include<iostream> using namespace std; int main(){ int year; cin>>year; if(year%4 == 0 && year%100 != 0 || year%400 == 0){ cout<<"Y"<<endl; } else{ cout<<"N"<<endl; } return 0; }

#include<iostream> using namespace std; int main(){ int year; cin>>year; if(year%4 == 0 && year%100 != 0 || year%400 == 0){ cout<<"Y"<<endl; } else{ cout<<"N"<<endl; } return 0; }

首先我们要知道条件是什么，然后进行判断， 如果是闰年，输出Y,否则输出N: y % 4 == 0 && y % 100 != 0 || y % 400 == 0 if后就可以了。

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(a%40&&a%100!=0||a%4000){ cout<<"Y"<<endl; }else{ cout<<"N"<<endl; } return 0; }

题解来啦（可直接抄） 用ifelse就行辣

通过大量if语句进行判断，是程序达到题目要求

#include<iostream> using namespace std; int main(){ int n; cin>>n; if(n%40&&n%100!=0||n%4000){ cout<<"Y"; }else{ cout<<"N"; } return 0; }#include<iostream> using namespace std; int main(){ int n; cin>>n; if(n%40&&n%100!=0||n%4000){ cout<<"Y"; }else{ cout<<"N"; } return 0; }

#include <bits/stdc++.h> using namespace std; queue<string> nvip,vip; int main(){ int n; cin>>n; if(n%40&&n%100!=0||n%4000){ cout<<"Y"; }else{ cout<<"N"; } return 0; }

#include<iostream> using namespace std; int main() { int n; cin >> n; if ((n % 4 == 0 && n % 100 != 0) || n % 400 == 0) { cout << "Y" << endl; } else { cout << "N" << endl; } return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(a%40 && a%100!=0 || a%4000){ cout<<"Y"; }else{ cout<<"N"; } return 0; }

if(n%40){ if(n%1000){ if(n%400==0){ cout<<"Y"; }else{ cout<<"N"; } }else{ cout<<"Y"; } }else{ cout<<"N"; }

#include<iostream>//四年一闰，百年不闰，四百年再闰 using namespace std; int main(){ int a; cin>>a; if(a%4 == 0 && a%100 != 0 || a%400 == 0){ cout<<"Y"<<endl; } else{ cout<<"N"<<endl; } return 0; }

上号

#include<iostream> using namespace std; int main(){ int a; cin>>a; }