Identity matrix in C#

Question

sir how to check identity matrix 

 

 

using System;

public class IdtMat

{

public static void Main()

{

int i, j, row, col;

int[,] matA = new int[10,10];

Console.Write("\nEnter the no. of row: ");

i=Convert.ToInt16(Console.ReadLine());

Console.Write("Enter the no. of col: ");

j=Convert.ToInt16(Console.ReadLine());

Console.WriteLine("\nEnter the Element in Matrix: ");

for(row=0; row<i; row++)

{

for(col = 0; col<j; col++)

matA[row,col]= Convert.ToInt16(Console.ReadLine());

Console.WriteLine();

}

Console.WriteLine("\nMatrix A: ");

for(row=0; row<i; row++)

{

for(col = 0; col<j; col++)

Console.Write("{0:D2} ", matA[row,col]);

Console.WriteLine();

}

for(row = 0; row < i; row++)

{

for(col = 0; col<j; col++)

{

if ((row == col && matA[row, col] == 1) && (row != col && matA[row, col] == 0))

{

goto lable;

}

else

{

Console.WriteLine("\n Not an Identity Matrix");

row=col=i;

}

}

}

lable: Console.WriteLine("Identity matrix");

Console.ReadLine();

}

}

 

 

this program is not working every time it prints identity matrix for the input

3 0 0

0 3 0

0 0 3