C# Program to Display Lower Triangular Matrix

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In linear algebra, a lower triangular matrix is a square matrix in which all the elements above the main diagonal are zero. In this C# program, we will generate and display a lower triangular matrix.

Problem Statement:

Write a C# program that takes an integer ‘n’ as input and generates a lower triangular matrix of size ‘n x n’ with random values for the elements below or on the main diagonal. Then, it will display the matrix.

C# Program to Display Lower Triangular Matrix

using System;

class LowerTriangularMatrix
{
    static void Main()
    {
        Console.WriteLine("Lower Triangular Matrix Generator");
        Console.Write("Enter the size of the matrix (n): ");
        int n = int.Parse(Console.ReadLine());

        int[,] matrix = GenerateLowerTriangularMatrix(n);

        Console.WriteLine("\nLower Triangular Matrix:");
        DisplayMatrix(matrix);
    }

    static int[,] GenerateLowerTriangularMatrix(int n)
    {
        int[,] matrix = new int[n, n];
        Random rand = new Random();

        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j <= i; j++)
            {
                matrix[i, j] = rand.Next(1, 101); // Fill with random values (1-100)
            }
        }

        return matrix;
    }

    static void DisplayMatrix(int[,] matrix)
    {
        int n = matrix.GetLength(0);

        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < n; j++)
            {
                Console.Write(matrix[i, j] + "\t");
            }
            Console.WriteLine();
        }
    }
}

How it Works:

  1. The program starts by taking input for the size of the matrix ‘n’.
  2. The GenerateLowerTriangularMatrix function generates a lower triangular matrix of size ‘n x n’ with random values below or on the main diagonal.
  3. The DisplayMatrix function is used to display the generated matrix.
  4. The generated lower triangular matrix is displayed on the console.

Input/Output:

C# Program to Display Lower Triangular Matrix
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