C++ Program to Check two Matrixes are Equal

Write a C++ Program to Check two Matrixes are Equal with an example. In this C++ Matrix equal example, we used nested for loops to iterate the items. Next, we used the If statement (if(a[rows][columns] != b[rows][columns])) within the for loop to check whether each item in a matrix not equal to the b matrix item. If True, change the isEqual to 0 and apply the break statement to exit the loop. Next, we used the isEqual variable within the C++ If Else statement to print the matrix output.

#include<iostream>
using namespace std;

int main()
{
	int i, j, rows, columns, isEqual;
	
	cout << "\nPlease Enter the rows and Columns a Equal Matrix =  ";
	cin >> i >> j;
	
	int a[i][j], b[i][j];
	
	cout << "\nPlease Enter the First Matrix Items =  ";
	for(rows = 0; rows < i; rows++)	{
		for(columns = 0; columns < i; columns++) {
			cin >> a[rows][columns];
		}		
	}	
	cout << "\nPlease Enter the Second Matrix Items =  ";
	for(rows = 0; rows < i; rows++)	{
		for(columns = 0; columns < i; columns++) {
			cin >> b[rows][columns];
		}		
	}
	
	isEqual = 1; 	
 	for(rows = 0; rows < i; rows++)
  	{
   		for(columns = 0; columns < j; columns++)
    	{
      		if(a[rows][columns] != b[rows][columns])
			{
			  	isEqual = 0;
			  	break;
			}    
   	 	}
  	}
 	if(isEqual == 1)
 	{
 		cout << "\nMatrix a is Equal to Matrix b";		
	}
	else
	{
		cout << "\nMatrix a is Not Equal to Matrix b";
	}	

 	return 0;
}

Let me try two different inputs.

Please Enter the rows and Columns a Equal Matrix =  2 2

Please Enter the First Matrix Items =  
1 2
3 4

Please Enter the Second Matrix Items =  
1 2
3 5

Matrix a is Not Equal to Matrix b

In this C++ Matrix Equal code, we used a few extra cout statements to display the iteration numbers, row, column number, and the items.

#include<iostream>
using namespace std;

int main()
{
	int i, j, rows, columns, isEqual;
	
	cout << "\nPlease Enter the rows and Columns =  ";
	cin >> i >> j;
	
	int a[i][j], b[i][j];
	
	cout << "\nPlease Enter the First Mat Items =  ";
	for(rows = 0; rows < i; rows++)	{
		for(columns = 0; columns < i; columns++) {
			cin >> a[rows][columns];
		}		
	}	
	cout << "\nPlease Enter the Second Mat Items =  ";
	for(rows = 0; rows < i; rows++)	{
		for(columns = 0; columns < i; columns++) {
			cin >> b[rows][columns];
		}		
	}
	
	isEqual = 1; 	
 	for(rows = 0; rows < i; rows++)
  	{
  		cout << "\nRow Iteration = " << rows + 1 << ", Row Number = " << rows;
   		for(columns = 0; columns < j; columns++)
    	{
    		cout << "\nColumn Iteration = " << columns + 1 << ", Column Number = " << 
			  	columns << ", and Row Number = " << rows;
			cout << "\nThe Result of a[" << rows << "][" << columns << "] != " 
				<< "b[" << rows << "][" << columns << "] = "  << (a[rows][columns] != b[rows][columns]);
      		if(a[rows][columns] != b[rows][columns])
			{
			  	isEqual = 0;
			  	break;
			}    
   	 	}
  	}
 	if(isEqual == 1)
 	{
 		cout << "\nMatrix a is Equal to b";		
	}
	else
	{
		cout << "\nMatrix a is Not Equal to b";
	}	

 	return 0;
}

Please Enter the rows and Columns =  2 2

Please Enter the First Mat Items =  
1 2
3 4

Please Enter the Second Mat Items =  
1 2
3 4

Row Iteration = 1, Row Number = 0
Column Iteration = 1, Column Number = 0, and Row Number = 0
The Result of a[0][0] != b[0][0] = 0
Column Iteration = 2, Column Number = 1, and Row Number = 0
The Result of a[0][1] != b[0][1] = 0
Row Iteration = 2, Row Number = 1
Column Iteration = 1, Column Number = 0, and Row Number = 1
The Result of a[1][0] != b[1][0] = 0
Column Iteration = 2, Column Number = 1, and Row Number = 1
The Result of a[1][1] != b[1][1] = 0
Matrix a is Equal to b

C++ Program to Check two Matrixes are Equal using While loop

#include<iostream>
using namespace std;

int main()
{
	int i, j, rows, columns, isEqual;
	
	cout << "\nPlease Enter the rows and Columns =  ";
	cin >> i >> j;
	
	int a[i][j], b[i][j];
	
	cout << "\nPlease Enter the First Matrix Items =  ";
	for(rows = 0; rows < i; rows++)	{
		for(columns = 0; columns < i; columns++) {
			cin >> a[rows][columns];
		}		
	}	
	cout << "\nPlease Enter the Second Matrix Items =  ";
	for(rows = 0; rows < i; rows++)	{
		for(columns = 0; columns < i; columns++) {
			cin >> b[rows][columns];
		}		
	}
	
	isEqual = 1; 
	rows = 0; 	
 	while(rows < i)
  	{
  		columns = 0;
   		while(columns < j)
    	{
      		if(a[rows][columns] != b[rows][columns])
			{
			  	isEqual = 0;
			  	break;
			}
			columns++;
   	 	}
   	 	rows++;
  	}
  	
 	(isEqual == 1) ? cout << "\nMatrix a is Equal to b" : 
	 	cout << "\nMatrix a is Not Equal to b";	

 	return 0;
}

Please Enter the rows and Columns =  3 3

Please Enter the First Matrix Items =  10 20 30 40 50 60 70 80 90

Please Enter the Second Matrix Items =  10 20 30 40 50 60 70 80 90

Matrix a is Equal to b