How to interchange diagonal elements of a matrix in C++

C-Plus-Plus-Programs

In this article, we are going to learn about How to interchange diagonal elements of a matrix in C++We will take the input from the user for the matrix elements, and then we will perform the switch on the diagonal elements of a matrix.

In this example, we are going to interchange diagonal elements of a matrix. We will ask the user to enter the values for each index, and once we have the matrices, then we will perform the switch on the diagonal elements of a matrix. The matrix that the user is providing must be a square matrix. Let us understand this with the help of the below code example.

How to interchange diagonal elements of a matrix in C++

#include<iostream>
using namespace std;
int main()
{
	int Matrix[10][10];
	int RowSize , ColumnSize;
	int row, col;
	long TempElements = 0;
	
	
	
	cout<<"Enter Row and Column Size of the Matrix: ";
    cin>>RowSize>>ColumnSize;

	if(RowSize == ColumnSize)
	{
		cout<<"Please enter the Elements of the Matrix: ";
		for(row=0; row< RowSize; row++)
		{
			for(col=0; col< ColumnSize; col++)
				cin>> Matrix[row][col];
		}
		
		cout<<"The matrix inputted by the user is: \n";
		for(row=0; row< RowSize; ++row)
        {
            for(col=0; col< ColumnSize; col++)
            {
                cout<<" "<<Matrix[row][col];
            }
            cout<<"\n";
        }
		
        for(row=0; row< RowSize; ++row)
        {
            TempElements = Matrix[row][row];
            Matrix[row][row] = Matrix[row][RowSize - row - 1];
            Matrix[row][RowSize - row - 1] = TempElements;
        }
		
		
		cout<<"The matrix after changing the diagonal elements is: \n";
        for(row=0; row< RowSize; ++row)
        {
            for(col=0; col< ColumnSize; col++)
            {
                cout<<" "<<Matrix[row][col];
            }
            cout<<"\n";
        }
		
		
	}
	else
		cout<<"The size is not a Square Matrix  "<<"\n";
	

    return 0;
}

Output

Enter Row and Column Size of the Matrix: 3
3
Please enter the Elements of the Matrix: 1
2
3
4
5
6
7
8
9
The matrix inputted by the user is: 
 1 2 3
 4 5 6
 7 8 9
The matrix after changing the diagonal elements is: 
 3 2 1
 4 5 6
 9 8 7

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