C program to calculate electricity bill
In this tutorial, we will discuss C program to calculate electricity bill
In this post, we will learn how to calculate electricity bill using if condition in the C programming language
We can calculate monthly electric power usage in many ways.
In this tutorial, we display two programs calculating electricity bill in Java.
Before we write a program to calculate the electricity bill, we must understand electricity charges rates.
/*1 - 100 unit - 5/= 101-200 unit - 7/= 201-300 unit - 10/= above 300 - 15/=*/ //for example
Example
We can explain of this program as follows
- Declare total unit consumed by the customer using the variable unit.
- When the unit consumed less or equal to 100 units, calculates the total amount of usage =unit*5
- When unit consumed between 100 to 200 units, calculates the total amount of usage =(100*5)+(unit-100)*7)
- When unit consumed between 200 to 300 units ,calculates total amount of usage =100*5)+(100*7)+(unit-200)*10
- When unit consumed above 300 units ,calculates total amount of usage =(100*5)+(100*7)+(100*10)+(unit-300)*15
- No additional charge
Electricity bill calculation – using normal method
program 1
#include <stdio.h>
#include <stdlib.h>
int main()
{
int unit=311; //declare variable unit
//first we understand unit prize
/*1 - 100 unit - 5/=
101-200 unit - 7/=
201-300 unit - 10/=
above 300 - 15/=*/
if(unit<=100){//when this statement is true
printf("%d",unit*5);//this statement is Executed otherwise
}
else if(unit<=200){//when this statement is true
printf("%d",(100*5)+(unit-100)*7);//this statement is Executed otherwise
}
else if(unit<=300){//when this statement is true
printf("%d",(100*5)+(100*7)+(unit-200)*10);//this statement is Executed otherwise
}
else if(unit>300){//when this statement is true
printf("%d",(100*5)+(100*7)+(100*10)+(unit-300)*15);//this statement is Executed otherwise
}
else{//when all statements are false
printf("No value");//this statement is Executed
}
getch();
return 0;
}
When the above code is executed, it produces the following results
2365
Electricity bill calculation – using take input from the user
Program 2
#include <stdio.h>
#include <stdlib.h>
int main()
{
int unit; //declare variable unit
//first we understand unit prize
/*1 - 100 unit - 5/=
101-200 unit - 7/=
201-300 unit - 10/=
above 300 - 15/=*/
printf("Enter total units consumed: ");
scanf("%d",&unit);
if(unit<=100){//when this statement is true
printf("Bill amount is: ");
printf("%d",unit*5);//this statement is Executed otherwise
}
else if(unit<=200){//when this statement is true
printf("Bill amount is: ");
printf("%d",(100*5)+(unit-100)*7);//this statement is Executed otherwise
}
else if(unit<=300){//when this statement is true
printf("Bill amount is: ");
printf("%d",(100*5)+(100*7)+(unit-200)*10);//this statement is Executed otherwise
}
else{//when all statements are false
printf("Bill amount is: ");//consumed above 30 units
printf("%d",(100*5)+(100*7)+(100*10)+(unit-300)*15);
//this statement is Executed otherwise
}
getch();
return 0;
}
When the above code is compiled and executed, it produces the following results
Enter total units consumed: 235 Bill amount is: 1550
Electricity bill calculation – using Using & operator
#include <stdio.h>
#include <stdlib.h>
int main()
{
int unit; //declare variable unit
//first we understand unit prize
/*1 - 100 unit - 5/=
101-200 unit - 7/=
201-300 unit - 10/=
above 300 - 15/=
for example*/
printf("Enter total units consumed: ");
scanf("%d",&unit);
if(unit>0 && unit<=100){//when this statement is true
printf("Bill amount is: ");
printf("%d",unit*5);//this statement is Executed otherwise
}
else if(unit>100 && unit<=200){//when this statement is true
printf("Bill amount is: ");
printf("%d",(100*5)+(unit-100)*7);//this statement is Executed otherwise
}
else if(unit >200 && unit<=300){//when this statement is true
printf("Bill amount is: ");
printf("%d",(100*5)+(100*7)+(unit-200)*10);//this statement is Executed otherwise
}
else if(unit >300){//when all statements are false
printf("Bill amount is: ");//consumed above 30 units
printf("%d",(100*5)+(100*7)+(100*10)+(unit-300)*15);
//this statement is Executed otherwise
}
else{//all statements are false
printf("No charges");
}//this statement is executed
getch();
return 0;
}
When the above code is compiled and executed, it produces the following results
Enter total units consumed: 250 Bill amount is: 1700
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