C Program to Check if a given Matrix is an Identity Matrix

C program to check if a given matrix is an identity matrix; Through this tutorial, we will learn how to check if a given matrix is an identity matrix in c programs.

C Program to Check if a given Matrix is an Identity Matrix

/* C Program to check Matrix is an Identity Matrix or Not */

#include<stdio.h>

int main()
{
 	int i, j, rows, columns, a[10][10], Flag = 1;

 	printf("\n Please Enter Number of rows and columns  :  ");
 	scanf("%d %d", &i, &j);

 	printf("\n Please Enter the Matrix Elements \n");
 	for(rows = 0; rows < i; rows++)
  	{
   		for(columns = 0; columns < j; columns++)
    	{
      		scanf("%d", &a[rows][columns]);
    	}
  	}

 	for(rows = 0; rows < i; rows++)
  	{
   		for(columns = 0; columns < j; columns++)
    	{
    		if(a[rows][columns] != 1 && a[columns][rows] != 0)
    		{
    			Flag = 0;
    			break;
			}
   	 	}
  	}
  	if(Flag == 1)
  	{
  		printf("\n The Matrix that you entered is an Identity Matrix ");
	}
	else
	{
		printf("\n The Matrix that you entered is Not an Identity Matrix ");
	}

 	return 0;
}

The output of the above c program; as follows:

Please Enter Number of rows and columns  :  2 2
Please Enter the Matrix Elements
1 2
1 4
The Matrix that you entered is Not an Identity Matrix 

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