C#: A menu-driven program to compute the area of the various geometrical shape

C# Sharp Conditional Statement: Exercise-24 with Solution

Write a C# Sharp program that calculates the area of geometrical shapes using a menu-driven approach.

Sample Solution:-

C# Sharp Code:

using System;  // Importing necessary namespaces

public class Exercise24  // Declaration of the Exercise24 class
{  
    public static void Main()  // Main method, entry point of the program
    {
        int choice, r, l, w, b, h;  // Declaration of variables for user choices and shape dimensions
        double area = 0;  // Variable to store the calculated area

        Console.Write("\n\n");  // Displaying new lines
        Console.Write("A menu driven program to compute the area of various geometrical shapes:\n");  // Displaying the purpose of the program
        Console.Write("-------------------------------------------------------------------------");  // Displaying a separator
        Console.Write("\n\n");

        // Displaying the menu options for calculating the area of different shapes
        Console.Write("Input 1 for area of circle\n");
        Console.Write("Input 2 for area of rectangle\n");
        Console.Write("Input 3 for area of triangle\n");
        Console.Write("Input your choice : ");
        choice = Convert.ToInt32(Console.ReadLine());  // Reading the user's choice

        switch (choice)  // Switch statement based on the user's choice
        {
            case 1:  // Calculation for the area of a circle
                Console.Write("Input radius of the circle : ");
                r = Convert.ToInt32(Console.ReadLine());  // Reading the radius
                area = 3.14 * r * r;  // Calculating the area of the circle
                break;
            case 2:  // Calculation for the area of a rectangle
                Console.Write("Input length of the rectangle : ");
                l = Convert.ToInt32(Console.ReadLine());  // Reading the length
                Console.Write("Input width of the rectangle : ");
                w = Convert.ToInt32(Console.ReadLine());  // Reading the width
                area = l * w;  // Calculating the area of the rectangle
                break;
            case 3:  // Calculation for the area of a triangle
                Console.Write("Input the base of the triangle :");
                b = Convert.ToInt32(Console.ReadLine());  // Reading the base
                Console.Write("Input the height of the triangle :");
                h = Convert.ToInt32(Console.ReadLine());  // Reading the height
                area = 0.5 * b * h;  // Calculating the area of the triangle
                break;
        }

        Console.Write("The area is : {0}\n", area);  // Displaying the calculated area
    }
}

Sample Output:

A menu driven program to compute the area of various geometrical shape:                                       
-------------------------------------------------------------------------                      
Input 1 for area of circle                                                                                    
Input 2 for area of rectangle                                                                                 
Input 3 for area of triangle                                                                                  
Input your choice : 2                                                                                         
Input length  of the rectangle : 20                                                                           
Input  width of the rectangle : 30                                                                            
The area is : 600 

Flowchart:

C# Sharp Code Editor:

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