C# Sharp Exercises: Calculate Electricity Bill

C# Sharp Conditional Statement: Exercise-18 with Solution

Write a C# Sharp program to calculate and print the electricity bill of a customer. From the keyboard, the customer's name, ID, and unit consumed should be taken and displayed along with the total amount due.
The charge are as follow:

If bill exceeds Rs. 400 then a surcharge of 15% will be charged and the minimum bill should be of Rs. 100/-

Sample Solution:-

C# Sharp Code:

using System;  // Importing necessary namespaces

public class exercise18  // Declaration of the exercise18 class
{
    static void Main(string[] args)  // Entry point of the program
    {  
        int custid, conu;  // Declaration of variables to store customer ID and consumed units
        double chg, surchg = 0, gramt, netamt;  // Declaration of variables for charges, surcharge, gross amount, and net amount
        string connm;  // Declaration of variable to store customer name

        Console.Write("\n\n");  // Printing new lines
        Console.Write("Calculate Electricity Bill:\n");  // Displaying the purpose of the program
        Console.Write("----------------------------");  // Displaying a separator
        Console.Write("\n\n");

        Console.Write("Input Customer ID :");  // Prompting user to input customer ID
        custid = Convert.ToInt32(Console.ReadLine());  // Reading the input and converting it to an integer
        Console.Write("Input the name of the customer :");  // Prompting user to input customer name
        connm = Console.ReadLine();  // Reading the input for customer name
        Console.Write("Input the unit consumed by the customer : ");  // Prompting user to input consumed units
        conu = Convert.ToInt32(Console.ReadLine());  // Reading the input and converting it to an integer

        // Determining the charge based on consumed units
        if (conu < 200)
            chg = 1.20;
        else if (conu >= 200 && conu < 400)
            chg = 1.50;
        else if (conu >= 400 && conu < 600)
            chg = 1.80;
        else
            chg = 2.00;

        gramt = conu * chg;  // Calculating gross amount
        if (gramt > 300)
            surchg = gramt * 15 / 100.0;  // Calculating surcharge if the gross amount exceeds 300

        netamt = gramt + surchg;  // Calculating net amount

        if (netamt < 100)
            netamt = 100;  // Setting minimum net amount as 100

        // Printing electricity bill details
        Console.Write("\nElectricity Bill\n");
        Console.Write("Customer IDNO                       :{0}\n", custid);
        Console.Write("Customer Name                       :{0}\n", connm);
        Console.Write("unit Consumed                       :{0}\n", conu);
        Console.Write("Amount Charges @Rs. {0}  per unit   :{1}\n", chg, gramt);
        Console.Write("Surchage Amount                     :{0}\n", surchg);
        Console.Write("Net Amount Paid By the Customer     :{0}\n", netamt);
    }  
}

Sample Output:

Calculate Electricity Bill:                                                                                   
----------------------------                                                                                  
                                                                                                              
Input Customer ID :10001                                                                                      
Input the name of the customer :james                                                                         
Input the unit consumed by the customer : 800                                                                 
                                                                                                              
Electricity Bill                                                                                              
Customer IDNO                       :10001                                                                    
Customer Name                       :james                                                                    
unit Consumed                       :800                                                                      
Amount Charges @Rs. 2  per unit :1600                                                                         
Surchage Amount                     :240                                                                      
Net Amount Paid By the Customer     :1840  

Flowchart:

C# Sharp Code Editor:

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