# Program to calculate Electricity Bill

Given an integer U denoting the amount of KWh units of electricity consumed, the task is to calculate the electricity bill with the help of the below charges:

• 1 to 100 units – • 100 to 200 units – • 200 to 300 units – • above 300 units – Examples:

Input: U = 250
Output: 3500
Explanation:
Charge for the first 100 units – 10*100 = 1000
Charge for the 100 to 200 units – 15*100 = 1500
Charge for the 200 to 250 units – 20*50 = 1000
Total Electricity Bill = 1000 + 1500 + 1000 = 3500

Input: U = 95
Output: 950
Explanation:
Charge for the first 100 units – 10*95 = 950
Total Electricity Bill = 950

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach: The idea is to identify the charge bar in which it falls and then calculate the bill according to the charges mentioned above. Below is the illustration of the steps:

• Check units consumed is less than equal to the 100, If yes then the total electricity bill will be: • Else if, check that units consumed is less than equal to the 200, if yes then total electricity bill will be: • Else if, check that units consumed is less than equal to the 300, if yes then total electricity bill will be: • Else if, check that units consumed greater than 300, if yes then total electricity bill will be: Below is the implementation of the above approach:

## C++

 // C++ implementation to calculate the   // electricity bill   #include  using namespace std;     // Function to calculate the   // electricity bill   int calculateBill(int units)   {          // Condition to find the charges       // bar in which the units consumed       // is fall       if (units <= 100)       {           return units * 10;       }       else if (units <= 200)      {           return (100 * 10) +                  (units - 100) * 15;       }       else if (units <= 300)      {           return (100 * 10) +                  (100 * 15) +                  (units - 200) * 20;       }       else if (units > 300)      {           return (100 * 10) +                  (100 * 15) +                  (100 * 20) +                  (units - 300) * 25;       }       return 0;   }      // Driver Code   int main()   {       int units = 250;       cout << calculateBill(units);   }      // This code is contributed by spp____

## Java

 // Java implementation to calculate the  // electricity bill     import java.util.*;     class ComputeElectricityBill {         // Function to calculate the      // electricity bill      public static int calculateBill(int units)      {             // Condition to find the charges          // bar in which the units consumed          // is fall          if (units <= 100) {              return units * 10;          }          else if (units <= 200) {              return (100 * 10)                  + (units - 100)                        * 15;          }          else if (units <= 300) {              return (100 * 10)                  + (100 * 15)                  + (units - 200)                        * 20;          }          else if (units > 300) {              return (100 * 10)                  + (100 * 15)                  + (100 * 20)                  + (units - 300)                        * 25;          }          return 0;      }         // Driver Code      public static void main(String args[])      {          int units = 250;             System.out.println(              calculateBill(units));      }  }

## Python3

 # Python3 implementation to calculate the   # electricity bill      # Function to calculate the   # electricity bill   def calculateBill(units):         # Condition to find the charges       # bar in which the units consumed       # is fall       if (units <= 100):                  return units * 10;              elif (units <= 200):                 return ((100 * 10) +                  (units - 100) * 15);              elif (units <= 300):                  return ((100 * 10) +                  (100 * 15) +                  (units - 200) * 20);              elif (units > 300):                 return ((100 * 10) +                  (100 * 15) +                  (100 * 20) +                  (units - 300) * 25);              return 0;      # Driver Code   units = 250;   print(calculateBill(units));      # This code is contributed by Code_Mech

## C#

 // C# implementation to calculate the   // electricity bill   using System;     class ComputeElectricityBill{      // Function to calculate the   // electricity bill   public static int calculateBill(int units)   {          // Condition to find the charges       // bar in which the units consumed       // is fall       if (units <= 100)      {           return units * 10;       }       else if (units <= 200)      {           return (100 * 10) +                  (units - 100) * 15;       }       else if (units <= 300)       {           return (100 * 10) +                 (100 * 15) +                  (units - 200) * 20;       }       else if (units > 300)       {           return (100 * 10) +                  (100 * 15) +                  (100 * 20) +                  (units - 300) * 25;       }       return 0;   }      // Driver Code   public static void Main(String []args)   {       int units = 250;              Console.WriteLine(calculateBill(units));   }   }      // This code is contributed by spp____

Output:

3500


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Improved By : spp____, Code_Mech

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