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C Program to Calculate Electricity Bill

by suresh

Write a C Program to Calculate Electricity Bill with an example. For this, we are using Else If Statement.

C Program to Calculate Electricity Bill Example

This program to Calculate Electricity Bill helps the user to enter the units that a user consumed. And then, it will calculate the Total Electricity bill. This approach to Calculate Electricity Bill in C is useful if the Electricity board is charging different tariffs for different units. For this example, we are using the Else If statement.

/* C Program to Calculate Electricity Bill */

#include <stdio.h>
 
int main()
{
	int Units;
	float Amount, Sur_Charge, Total_Amount;
  	
	printf("\n Please Enter the Units that you Consumed  :  ");
  	scanf("%d", &Units);
  
  	if (Units < 50)
  	{
             Amount = Units * 2.60;
  		Sur_Charge = 25;  	
  	} 
  	else if (Units <= 100)
  	{
  		// First Fifty Units charge is 130 (50 * 2.60)
  		// Next, we are removing those 50 units from total units
  		Amount = 130 + ((Units - 50 ) * 3.25);
  		Sur_Charge = 35; 	
  	}
  	else if (Units <= 200)
  	{
  		// First Fifty Units charge is 130, and 50 - 100 is 162.50 (50 * 3.25)
  		// Next, we are removing those 100 units from total units
  		Amount = 130 + 162.50 + ((Units - 100 ) * 5.26);
  		Sur_Charge = 45; 	
  	}
  	else
  	{
  		// First Fifty Units 130, 50 - 100 is 162.50, and 100 - 200 is 526 (100 * 5.65)
  		// Next, we are removing those 200 units from total units
	   	Amount = 130 + 162.50 + 526 + ((Units - 200 ) * 7.75); 
	   	Sur_Charge = 55; 
	}
	
	Total_Amount = Amount + Sur_Charge;
	printf("\n Electricity Bill  =  %.2f", Total_Amount); 
	
  	return 0;
}
C Program to Calculate Electricity Bill 1

Let me try another value

C Program to Calculate Electricity Bill 2

Program to Calculate Electricity Bill Example 2

This C program to find electricity bill is useful if the board has uniform rates. Something like: if you consume between 300 and 500 units, then changes will be fixed as 7.75 Rupees for Unit, etc.

The Else If statement  in C Programming will check for the first condition, if it is TRUE, it will execute the statements present in that block. If the condition is FALSE, it will check the Next one (Else If condition) and so on.

/* C Program to Calculate Electricity Bill */

#include <stdio.h>
 
int main()
{
	int Units;
	float Amount, Sur_Charge, Total_Amount;
  	
	printf("\n Please Enter the Units that you Consumed  :  ");
  	scanf("%d", &Units);
  
       // If it is True then Statements inside this block will be executed
  	if (Units > 500)
  	{
  		Amount = Units * 9.65;
  		Sur_Charge = 85;  	
  	} // Otherwise (fails), Compiler will move to Next Else If block 
  	else if (Units >= 300)
  	{
  		Amount = Units * 7.75;
  		Sur_Charge = 75; 	
  	} 
  	else if (Units >= 200)
  	{
  		Amount = Units * 5.26;
  		Sur_Charge = 55; 	
  	}  
  	else if (Units >= 100)
  	{
  		Amount = Units * 3.76;
  		Sur_Charge = 35; 	
  	} // Otherwise (fails), Compiler will move to Else block   	
  	else
  	{
	   	Amount = Units * 2.25; 
	   	Sur_Charge = 25; 
	}
	
	Total_Amount = Amount + Sur_Charge;
	printf("\n Electricity Bill  =  %.2f", Total_Amount); 
	
  	return 0;
}
C Program to Calculate Electricity Bill 3

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