- C Programming Examples
- C Programming Examples
- C Print Hello World
- C Get Input from User
- C Print Integer
- C Add Two Numbers
- C Add Subtract Multiply Divide
- C Add n Numbers
- C Area Perimeter of Square
- C Area Perimeter of Rectangle
- C Area Circum of Circle
- C Fahrenheit to Celsius
- C Celsius to Fahrenheit
- C Inches to Centimeters
- C Kilogram to Gram
- C Reverse a Number
- C Swap Two Numbers
- C Interchange Numbers
- C Print ASCII Value
- C Print Fibonacci Series
- C Check Palindrome or Not
- C Check Armstrong or Not
- C Find Armstrong Numbers
- C Find nCr and nPr
- C Find Profit Loss
- C Sum of their Square
- C First & Last Digit Sum
- C Sum of All Digit
- C Product of All Digit
- C Print Total Digit in Number
- C Check Perfect Number
- C Find Basic Gross Salary
- C Round Number to Integer
- C Print Series upto n Term
- C Find Factors of Number
- C if-else & Loop Programs
- C Check Even or Odd
- C Check Prime or Not
- C Check Alphabet or Not
- C Check Vowel or Not
- C Check Leap Year or Not
- C Is Reverse Equal Original
- C Make Calculator
- C Add Digits of Number
- Count Positive Negative Zero
- C Largest of Two Numbers
- C Largest of Three Numbers
- C Smallest of Two Numbers
- C Smallest of Three Numbers
- C Find Factorial of Number
- C Find LCM & HCF
- C Find LCM of n Numbers
- C Find HCF of n Numbers
- C Find Arithmetic Mean
- C Find Average, Percentage
- C Find Student Grade
- C Print Table of Number
- C Print Prime Numbers
- C Find Discount Purchase
- C Calculate Parcel Charge
- C Calculate Wage of Labor
- C Print Phone Bill
- C Conversion programs
- C Decimal to Binary
- C Decimal to Octal
- C Decimal to Hexadecimal
- C Binary to Decimal
- C Binary to Octal
- C Binary to Hexadecimal
- C Octal to Decimal
- C Octal to Binary
- C Octal to Hexadecimal
- C Hexadecimal to Decimal
- C Hexadecimal to Binary
- C Hexadecimal to Octal
- C Pattern Programs
- C Pattern Printing Programs
- C Print Diamond Pattern
- C Print Floyd's Triangle
- C Print Pascal's Triangle
- C Array Programs
- C 1D Array Programs
- C Linear Search
- C Binary Search
- C Largest Element in Array
- C Smallest Element in Array
- C Second Largest/Smallest
- C Count Even Odd
- C Array Element at Even
- C Array Element at Odd
- C Print Even Array Elements
- C Print Odd Array Elements
- C Sum/Product of Even/Odd
- C Reverse an Array
- C Insert Element in Array
- C Delete Element from Array
- C Merge Two Arrays
- C Bubble Sort
- C Selection Sort
- C Insertion Sort
- C Print Common Elements
- C 2D Array Programs
- C Add Two Matrices
- C Subtract Two Matrices
- C Transpose a Matrix
- C Multiply Two Matrices
- C Sum All Matrix Elements
- C Largest Element in Matrix
- C Print Row Column Total
- C 3D Array Programs
- C String Programs
- C Print String
- C Find Length of String
- C Compare Two String
- C Copy a String
- C Concatenate String
- C Reverse a String
- C Count Vowels Consonants
- C Replace Vowel in String
- C Delete Vowels from String
- C Delete Word from String
- C Frequency of Character
- C Count Word in String
- C Remove Spaces from String
- C Sort a String
- C Sort String in Alphabetical
- C Sort Words in Ascending
- C Sort Words in Descending
- C Uppercase to Lowercase
- C Lowercase to Uppercase
- C Swap Two Strings
- C Check Anagram or Not
- C Check Palindrome String
- C Print Number in Words
- C Print Successive Character
- C Character without Space
- C Remove Extra Spaces
- C File Programs
- C Read a File
- C Write Content to File
- C Read & Display File
- C Copy a File
- C Merge Two Files
- C Reverse File
- C Count All Character in File
- C List Files in Directory
- C Encrypt & Decrypt a File
- C Delete a File
- C Misc Programs
- Generate Random Numbers
- C Print Date Time
- C Print Message with Time
- C Get IP Address
- C Print Smiling face
- C Pass Array to Function
- Add Two Numbers using Pointer
- C Address of Variable
- C Shutdown Computer
- C Programming Tutorial
- C Tutorial
- C Programming Test
- C Programming Test

# C Program to Calculate Telephone Call Bills

In this tutorial, we will learn about how to create a program in C that will ask from user to enter total number of telephone calls made in particular month. Here number of telephone calls means number of minutes. After receiving the total number of phone calls made in a month, the program will calculate and print the payable amount (for that month) as per the given call rate:

- First 200 phones calls are free in every month
- Next 300 calls are charged at the rate of 1/minute
- And rest calls (after 500 calls or minutes) are charged at the rate of 2/minute

Let's take a look at the program.

#include<stdio.h> #include<conio.h> int main() { int noOfCall, tempNoOfCall, charge; printf("Enter total unit of calls made this month: "); scanf("%d", &noOfCall); printf("\n"); if(noOfCall<=200) { printf("You have not crossed the limit of 200 calls"); printf("\nNo charge."); } else { if(noOfCall<=500) { tempNoOfCall = noOfCall - 200; charge = tempNoOfCall * 1; printf("The charge you have to paid = %d", charge); } else { tempNoOfCall = noOfCall - 500; charge = tempNoOfCall * 2; charge = charge + 300; printf("The charge you have to paid = %d", charge); } } getch(); return 0; }

As the above program was written under **Code::Blocks** IDE, therefore after successful build and run, here is the similar
output you will see on your output screen, this is the first snapshot of the sample run:

Here user has to enter that how many number of calls (total number of unit or minutes) that he/she has made in the previous month.
For example, let's suppose that the telephone user has made total of **167** minutes of phones calls in previous month. Therefore,
user has to supply the input as **167** and then press `ENTER`

key to see the
charge that has to be paid for the previous month as shown in the second snapshot of the sample run given here:

As the first 200 calls or minutes of talk are free and user has only made total of 167 minutes of call, therefore no charge he/she has to be paid for the previous month. Here is another sample run, but this time user has crossed the limit of free 200 calls:

Here is another sample run. This time let's suppose that the user has made total of 2460 minutes of calls in previous month. Therefore the charge is shown in the sample run given below:

Here are some of the main steps used in above program:

- Receive total number of calls or minutes made in previous month by telephone user
- Now check whether the input is less than or equal to 200 or not
- If it is, then print a message like
**you have not crossed the limit of first 200 calls**, therefore the telephone user has not to paid any extra charge for previous month - And if user has crossed the limit of first 200 calls or minutes, then check whether the call is less than or equal to 500 or not
- If it is, then subtract the input value (let's suppose input value is stored inside a variable
say
**noOfCall**) with 200 and multiply the remaining value (let's suppose that the remaining value (remaining number of calls or minutes) stored in a variable say**tempNoOfCall**) with 1. As the first 200 calls are free and thereafter we have to charge 1/minute or call. That is multiply**tempNoOfCall**of call's value with 1 and then initialize it to a variable say**charge**(it holds the charge that has to be paid) - And if user has made 600 calls in previous month, then it is greater than first 500 calls, then we have to calculate the amount that has to be paid in a way given below
- Initialize
**noOfCall - 500**or**600-500**or**100**to**tempNoOfCall**. Now the variable say**tempNoOfCall**holds the value (or no of calls) that has to be charged at the rate of 2/minute. - Therefore initialize
**tempNoOfCall * 2**or**100 * 2**or**200**to**charge** - As the first 200 calls are free, and then next 300 calls are charged at the rate of 1 per call
- Therefore, we have to add
**300*1**or**300**to the**charge**variable. That is**charge + 300**or**200+300**or**500**will be initialized to the**charge**variable - Now whatever the final charge (that has to be paid by the user for the previous month of telephone bills) will be,
the
**charge**variable holds it - Finally print the value of
**charge**

« Previous Program Next Program »

Follow/Like Us on Facebook

Subscribe Us on YouTube