#include <iostream>

using namespace std;

int main()

{

int n,a,b,c,d;

cin >> n;

while (cin >> a >> b >> c >> d){

if ((b-a) == (d-c)){

int e;

cin >> e;

e = d+(d-c);

cout << a << " " << b << " " << c << " "<< d << " " << e << " " << endl;

}

else if (b/a == d/c){

int e;

cin >> e;

e = d*(d/c);

cout << a << " " << b << " " << c << " "<< d << " " << e << " " << endl;

}

}

return 0;

}

我還蠻好奇為甚麼只能輸出一行的  是while不能用在這題還是?