 # Input calls and calculate telephone bill in C

###### if else if - Question 12

In this question, we will see how to calculate and display the monthly telephone bill along with total numbers of calls and monthly rental in C programming using the if else if statement. To know more about if else if statement click on the if else if statement lesson.

Q12) A telephone company charges for using telephone from their consumers according to the calls made (per month) as per the given tariff:

 Numbers of calls Charge Up to 50 calls No charge (free) For next 100 calls exceeding 50 call Rs. 2 per call For next 200 calls exceeding 150 call Rs. 1.50 per call + Previous 100 calls bill amount More than 350 calls Rs. 1 per call + Previous 200 calls bill amount + previous 100 calls bill amount

However, monthly rental charge is Rs.180/- per month for all the consumers for using Telephones. Write a program in C to calculate and display the monthly telephone bill along with total numbers of calls and monthly rental.

#### Program

``````#include <stdio.h>
#include <conio.h>

int main()
{
int call,mr=180;
float bill;
printf("Enter total number of calls ");
scanf("%d",&call);

if(call<=50)
{
bill=0;
}
else if(call>50 && call<=150)
{
bill=(call-50)*2;
}
else if(call>150 && call<=350)
{
bill=(call-150)*1.5+(100*2);
}
else
{
bill=(call-350)*1+(200*1.5)+(100*2);
}

printf("Total Calls = %d\n",call);
printf("Total Calls Charges = %.2f\n",bill);
printf("Fixed Monthly Rental = %d\n",mr);
printf("Total Bill Amount = %.2f",bill+mr);
return 0;
}``````

#### Output

```Enter total number of calls 243
Total Calls = 243
Total Calls Charges = 339.50
Fixed Monthly Rental = 180
Total Bill Amount = 519.50``` 