Example: Matrix Addition in C++

// Matrix Addition
#include <iostream>
#include <vector> // Required if using std::vector for dynamic matrices

int main() {
    // Step 1: Define matrix dimensions
    const int ROWS = 2;
    const int COLS = 2;

    // Step 2: Declare and initialize two matrices
    int matrix1[ROWS][COLS] = {{1, 2}, {3, 4}};
    int matrix2[ROWS][COLS] = {{5, 6}, {7, 8}};
    int sumMatrix[ROWS][COLS]; // Matrix to store the sum

    // Step 3: Print original matrices (optional, for verification)
    std::cout << "Matrix 1:\n";
    for (int i = 0; i < ROWS; ++i) {
        for (int j = 0; j < COLS; ++j) {
            std::cout << matrix1[i][j] << " ";
        }
        std::cout << "\n";
    }

    std::cout << "\nMatrix 2:\n";
    for (int i = 0; i < ROWS; ++i) {
        for (int j = 0; j < COLS; ++j) {
            std::cout << matrix2[i][j] << " ";
        }
        std::cout << "\n";
    }

    // Step 4: Perform matrix addition using nested loops
    for (int i = 0; i < ROWS; ++i) { // Loop through rows
        for (int j = 0; j < COLS; ++j) { // Loop through columns
            sumMatrix[i][j] = matrix1[i][j] + matrix2[i][j];
        }
    }

    // Step 5: Print the resultant sum matrix
    std::cout << "\nSum of Matrices:\n";
    for (int i = 0; i < ROWS; ++i) {
        for (int j = 0; j < COLS; ++j) {
            std::cout << sumMatrix[i][j] << " ";
        }
        std::cout << "\n";
    }

    return 0;
}