Matrix

#include <iostream>

using namespace std;

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

    int i, j, s_i = 0, s_p = 0, q_p = 0, q_i = 0, mat[2][2];

    cout << "Please four inputs: " << endl;

    for(i = 0; i < 2; i++){
        for(j = 0; j < 2; j++){
            cin >> mat[i][j];
                if(mat[i][j] % 2 == 0){
                    q_p = q_p + 1;
                }
                else{
                    q_i = q_i + 1;
                }
        }
    }

    cout << "\n" << endl;

    for(i = 0; i < 2; i++){
        for(j = 0; j < 2; j++){
            if(mat[i][j] % 2 == 0){
                s_p = s_p + mat[i][j];
            }
            else{
                s_i = s_i + mat[i][j];
            }
        }
    }

    if(mat[i] == mat[j]){
            cout << "i = j" << endl;
        }
        else{
            cout << "i != j" << endl;
        }

    cout << "Even sum: " << s_p << endl;
    cout << "Odd sum: " << s_i << endl;
    cout << "Even amount: " << q_p << endl;
    cout << "Odd amount: " << q_i << endl;

}