Example: Matrix Transpose using Arrays in C

// Matrix Transpose using Arrays
#include <stdio.h>

int main() {
    int rows, cols;

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

    int matrix[rows][cols];
    int transpose[cols][rows]; // Transpose matrix will have dimensions cols x rows

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

    // Step 3: Print the original matrix
    printf("\nOriginal Matrix:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            printf("%d\t", matrix[i][j]);
        }
        printf("\n");
    }

    // Step 4: Compute the transpose
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            transpose[j][i] = matrix[i][j];
        }
    }

    // Step 5: Print the transposed matrix
    printf("\nTransposed Matrix:\n");
    for (int i = 0; i < cols; i++) { // Note: iterate with cols and rows swapped
        for (int j = 0; j < rows; j++) {
            printf("%d\t", transpose[i][j]);
        }
        printf("\n");
    }

    return 0;
}