C++ Program: 3×3 Matrix and Sum of Elements

C++ language (Article) (Program)

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Program:

#include <iostream>
using namespace std;

int main() {
    int matrix[3][3];
    int sum = 0;

    cout << "Enter elements of 3x3 matrix:\n";
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            cin >> matrix[i][j];
            sum += matrix[i][j];
        }
    }

    cout << "Sum of all elements = " << sum << endl;

    return 0;
}

Output:

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