C++ Program to Find Transpose of a Matrix

Before moving forward Program to Find Transpose of a Matrix, let’s first understand what is Transpose Matrix.

The transpose of a matrix is a new matrix whose rows are the columns of the original. (This makes the columns of the new matrix the rows of the original). Here is a matrix and its transpose:

In the above image T stands for Transpose.

This program takes a matrix of order r*c from the user and computes the transpose of the matrix.

where r is row and c is column

Program to Find Transpose of a Matrix

#include <iostream>
using namespace std;

int main()
{
    int a[10][10], trans[10][10], r, c, i, j;

    cout << "Enter rows and columns of matrix: ";
    cin >> r >> c;

    // Storing element of matrix entered by user in array a[][].
    cout << endl << "Enter elements of matrix: " << endl;
    for(i = 0; i < r; ++i)
    for(j = 0; j < c; ++j)
    {
        cout << "Enter elements a" << i + 1 << j + 1 << ": ";
        cin >> a[i][j];
    }

    // Displaying the matrix a[][]
    cout << endl << "Entered Matrix: " << endl;
    for(i = 0; i < r; ++i)
        for(j = 0; j < c; ++j)
        {
            cout << " " << a[i][j];
            if(j == c - 1)
                cout << endl << endl;
        }

    // Finding transpose of matrix a[][] and storing it in array trans[][].
    for(i = 0; i < r; ++i)
        for(j = 0; j < c; ++j)
        {
            trans[j][i]=a[i][j];
        }

    // Displaying the transpose,i.e, Displaying array trans[][].
    cout << endl << "Transpose of Matrix: " << endl;
    for(i = 0; i < c; ++i)
        for(j = 0; j < r; ++j)
        {
            cout << " " << trans[i][j];
            if(j == r - 1)
                cout << endl << endl;
        }

    return 0;
}

Output

Enter rows and column of matrix: 2
3

Enter elements of matrix:
Enter elements a11: 1
Enter elements a12: 2
Enter elements a13: 9
Enter elements a21: 0
Enter elements a22: 4
Enter elements a23: 7

Entered Matrix:
1  2  9

0  4  7


Transpose of Matrix:
1  0

2  4

9  7

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