請問我程式哪裡錯了，只出現WA..

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

要改成這樣

 #include <cstdlib>     

#include <iostream>   

using namespace std;

int main(int argc, char *argv[])

{int y;

while(cin>>y){

if(0==y%400){

cout<<"閏年"<<endl; } 

else if(0==y%100){

cout<<"閏年"<<endl;}

else if(0==y%4){

cout<<"閏年"<<endl;}

else{cout<<"平年"<<endl;}}

return EXIT_SUCCESS;

}