C++ Program to Interchange Matrix Diagonals

Write a C++ Program to Interchange Matrix Diagonals with an example. In this C++ matrix diagonal interchange example, we used the If statement to check whether the given matrix is square. The first for loop within this C++ If statement uses the temp variable to interchange the matrix diagonal. And the other nested for loop will display the Matrix Items after Interchanging Diagonals.

#include<iostream>
using namespace std;

int main()
{
	int i, j, rows, columns, temp;
	
	cout << "\nEnter Matrix rows and Columns to interchange Diagonals =  ";
	cin >> i >> j;
	
	int intDiagMat[i][j];
	
	cout << "\nPlease Enter the intDiagMat Matrix Items\n";
	for(rows = 0; rows < i; rows++)	
	{
		for(columns = 0; columns < i; columns++) 
		{
			cin >> intDiagMat[rows][columns];
		}		
	}	
	
	if(rows == columns)
  	{
  		for(rows = 0; rows < i; rows++)
  		{
  			temp = intDiagMat[rows][rows];
  			intDiagMat[rows][rows] = intDiagMat[rows][i - rows - 1];
  			intDiagMat[rows][i - rows - 1] = temp;
	   	}		
  	  
 		cout << "\nThe intDiagMat Matrix Items after Interchanging Diagonals are:\n";
 		for(rows = 0; rows < j; rows++)
  		{
   			for(columns = 0; columns < i; columns++)
    		{
      			cout << intDiagMat[rows][columns] << " ";
    		}
    		cout << "\n";
  		}
  	}
  	else
  	{
  		cout << "\nThe Matrix that you entered is Not a Square matrix" ;
	}	

 	return 0;
}

C++ Program to Interchange Matrix Diagonals using Functions

#include<iostream>
using namespace std;

void interchangeDiagonols(int intDiagMat[50][50], int i, int j)
{
	int rows, columns, temp;
	
	for(rows = 0; rows < i; rows++)
  		{
  			temp = intDiagMat[rows][rows];
  			intDiagMat[rows][rows] = intDiagMat[rows][i - rows - 1];
  			intDiagMat[rows][i - rows - 1] = temp;
	   	}		
  	  
 		cout << "\nThe intDiagMat Matrix Items after Interchanging Diagonals are:\n";
 		for(rows = 0; rows < j; rows++)
  		{
   			for(columns = 0; columns < i; columns++)
    		{
      			cout << intDiagMat[rows][columns] << " ";
    		}
    		cout << "\n";
  		}
}
int main()
{
	int i, j, rows, columns, intDiagMat[50][50];
	
	cout << "\nEnter Matrix rows and Columns to interchange Diagonals =  ";
	cin >> i >> j;
	
	cout << "\nPlease Enter the intDiagMat Matrix Items\n";
	for(rows = 0; rows < i; rows++)	
	{
		for(columns = 0; columns < i; columns++) 
		{
			cin >> intDiagMat[rows][columns];
		}		
	}	
	
	if(rows == columns)
  	{
  		interchangeDiagonols(intDiagMat, i, j);
  	}
  	else
  	{
  		cout << "\nThe Matrix that you entered is Not a Square matrix" ;
	}	

 	return 0;
}

Enter Matrix rows and Columns to interchange Diagonals =  3 3

Please Enter the intDiagMat Matrix Items
10 20 30
55 77 88
99 66 44

The intDiagMat Matrix Items after Interchanging Diagonals are:
30 20 10 
55 77 88 
44 66 99