For some reason, zero1 won't let us use "cout << "hello, " << s;", so we have to use a while loop.

#include <iostream>

using namespace std;

int main() {

    string s;

     while(cin >> s){

         cout << "hello, "<< s << endl;

     }

     return 0;

} 

For some reason, zero1 won't let us use "cout << "hello, " << s;", so we have to use a while loop.

 

#include

using namespace std;

 

int main() {

    string s;

     while(cin >> s){

         cout << "hello, "<< s << endl;

     

} 

I know why:

From zero 1 puiching:程式說明：因為系統會賦予數量不一的測試資料來測驗您的程式是否正確，因此必須先以一個 while 迴圈來讀取所有的測試資料。