Example: Add Two 4x4 Matrices in C++

// Add Two 4x4 Matrices
#include <iostream> // Required for input/output operations

int main() {
    // Step 1: Declare three 4x4 matrices
    // matrix1 and matrix2 will store the input matrices
    // sumMatrix will store the result of the addition
    int matrix1[4][4];
    int matrix2[4][4];
    int sumMatrix[4][4];

    // Step 2: Get input for the first matrix (matrix1)
    std::cout << "Enter elements for the first 4x4 matrix:" << std::endl;
    for (int i = 0; i < 4; ++i) { // Loop for rows
        for (int j = 0; j < 4; ++j) { // Loop for columns
            std::cout << "Enter element at position [" << i << "][" << j << "]: ";
            std::cin >> matrix1[i][j];
        }
    }

    // Step 3: Get input for the second matrix (matrix2)
    std::cout << "\nEnter elements for the second 4x4 matrix:" << std::endl;
    for (int i = 0; i < 4; ++i) { // Loop for rows
        for (int j = 0; j < 4; ++j) { // Loop for columns
            std::cout << "Enter element at position [" << i << "][" << j << "]: ";
            std::cin >> matrix2[i][j];
        }
    }

    // Step 4: Perform matrix addition
    // Add corresponding elements of matrix1 and matrix2 and store in sumMatrix
    for (int i = 0; i < 4; ++i) { // Loop for rows
        for (int j = 0; j < 4; ++j) { // Loop for columns
            sumMatrix[i][j] = matrix1[i][j] + matrix2[i][j];
        }
    }

    // Step 5: Display the resulting sum matrix
    std::cout << "\nResultant Sum Matrix:" << std::endl;
    for (int i = 0; i < 4; ++i) { // Loop for rows
        for (int j = 0; j < 4; ++j) { // Loop for columns
            std::cout << sumMatrix[i][j] << "\t"; // Print element followed by a tab for formatting
        }
        std::cout << std::endl; // Move to the next line after printing each row
    }

    return 0; // Indicate successful program execution
}