C# Program to Display Upper Triangular Matrix

This C# Program Displays Upper Triangular Matrix.A square matrix is upper triangular matrix if all its entries below the main diagonal are zero.

Here is source code of the C# Program to Display Upper Triangular Matrix. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

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/*
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 * C# Program to Display Upper Triangular Matrix

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 */
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace ConsoleApplication8
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{
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    class Program
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    {
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        int x;
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        public static void Main(string[] args)

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        {
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            int m, n, i, j;
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            Console.Write("Enter Number Of Rows And Columns Of Matrices A and B : ");

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

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

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            int[,] A = new int[10, 10];
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            Console.Write("\nEnter The First Matrix : ");

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            for (i = 0; i < m; i++)
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            {
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                for (j = 0; j < n; j++)
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                {
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                    A[i, j] = Convert.ToInt16(Console.ReadLine());

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

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            for (i = 0; i < m; i++)
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            {
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                for (j = 0; j < n; j++)
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                {
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                    Console.Write(A[i, j] + "\t");

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                }
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                Console.WriteLine();
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            }
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            Console.WriteLine("\n Setting Zero to illustrate Upper Triangular Matrix\n");

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            for (i = 0; i < m; i++)
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            {
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                Console.Write("\n");
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                for (j = 0; j < 3; j++)
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                {
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                    if (i <= j)
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                        Console.Write(A[i, j] + "\t");

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                    else
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                        Console.Write("0\t");

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                }
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            }
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            Console.ReadLine();
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        }
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    }
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}
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Here is the output of the C# Program:

Enter Number Of Rows And Columns Of Matrices A and B : 3  3
Enter the First Matrix : 
1 2 3
2 3 4
3 4 5
Matrix A :
1 2 3
2 3 4
3 4 5
Setting Zero to illustrate Upper Triangular Matrix :
1 2 3
0 3 4
0 0 5

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