#include <iostream>
using namespace std;

int main ()
{
    int t;
    cin >> t;
    cout << " \n";
    
    float m[t][4];
    
    for (int i = 0; i < t; i++)
    {
        for (int j = 0; j < 4; j++)
        {            
            cin >> m[i][j];            
        }        
        cout << endl;
    }  
    

    
    for (int i = 0; i < t; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            cout << m[i][j] << " ";   
        }
        
        if (m[i][3] - m[i][2] == m[i][1] - m[i][0])
            {
               cout << m[i][3] + m[i][3] - m[i][2];
            }
            
        if (m[i][3] / m[i][2] == m[i][1] / m[i][0])
           {
               cout << m[i][3] * m[i][3] / m[i][2];     
           }
        cout << endl;
    }   
}

 與正確輸出不相符(line:1)
您的答案為:
正確答案為: 1 2 3 4 5

錯在哪裡，我看不懂他的意思......

 麻煩好心人士幫我看一下...謝謝！