Example: Addition of Two Matrices in C

// Addition of Two Matrices
#include <stdio.h>

int main() {
    int rows, cols;
    int matrix1[10][10], matrix2[10][10], sumMatrix[10][10];
    int i, j;

    // Step 1: Get dimensions from the user
    printf("Enter the number of rows (max 10): ");
    scanf("%d", &rows);
    printf("Enter the number of columns (max 10): ");
    scanf("%d", &cols);

    // Validate dimensions (optional, but good practice)
    if (rows <= 0 || rows > 10 || cols <= 0 || cols > 10) {
        printf("Invalid dimensions. Rows and columns must be between 1 and 10.\n");
        return 1; // Indicate an error
    }

    // Step 2: Get elements for the first matrix
    printf("\nEnter elements of first matrix:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("Enter element matrix1[%d][%d]: ", i, j);
            scanf("%d", &matrix1[i][j]);
        }
    }

    // Step 3: Get elements for the second matrix
    printf("\nEnter elements of second matrix:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("Enter element matrix2[%d][%d]: ", i, j);
            scanf("%d", &matrix2[i][j]);
        }
    }

    // Step 4: Perform matrix addition
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            sumMatrix[i][j] = matrix1[i][j] + matrix2[i][j];
        }
    }

    // Step 5: Display the resultant sum matrix
    printf("\nSum of the two matrices:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("%d\t", sumMatrix[i][j]);
        }
        printf("\n"); // Move to the next line after each row
    }

    return 0;
}