Matrix is identity matrix or not?

Question

write a program to verify whether a given matrix is identity matrix or not?

Hemant Srivastava · Answer

Following code has some more features as... User would be able to matrix of any order presence of break condition without using GOTO) using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { public static void Main() { Console.WriteLine(Enter the order: ); int n = int.Parse(Console.ReadLine()); int[] a = new int[n n]; int i j; Console.WriteLine(
 Enter the matrix
); for (i = 0; i { int num = 0; for (j = 0; j { Console.WriteLine(Enter [ + (i+1) + + (j+1) + ] element:  ); if (Int32.TryParse(Console.ReadLine() out num)) { a[i j] = num; } } } Console.WriteLine(Entered Matrix is as folowing:
); for (i = 0; i { for (j = 0; j { Console.Write(a[i j] + 	); } Console.WriteLine(); } bool IsIdentity = false; // Iterating all the elements of the given matrix for (i = 0; i { for (j = 0; j { // Each Diagonal element should be 1 and all other elements should be 0 if ((i == j && a[i j] == 1) || (i != j && a[i j] == 0)) { IsIdentity = true; } else { IsIdentity = false; break; } } } // After iterating all elemnts of the matrix checking the IsIdentity flag if (IsIdentity == true) { Console.WriteLine(
It is an Identity Matrix); } else { Console.WriteLine(
Not an Identity Matrix); } Console.ReadLine(); } } }

Priyank Khare · Answer

Hi Following is the program to verify whether a given matrix is identity or not :- using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { public static void Main() { Console.WriteLine(Enter the order: ); int n = int.Parse(Console.ReadLine()); int[] a = new int[3 3]; int i j; Console.WriteLine(
 Enter the matrix
); for (i = 0; i { for (j = 0; j { a[i j] = Convert.ToInt16(Console.ReadLine()); } } for (i = 0; i { for (j = 0; j { if ((i == j && a[i j] == 1) || (i != j && a[i j] == 0)) { goto Message; } else { Console.WriteLine(
 Not an Identity Matrix); i = j = n; } } } Message: Console.WriteLine(
 It is an Identity Matrix); Console.ReadLine(); } } }