C Program to Implement Telecom Billing System
C
#include <stdio.h> #include <string.h> // Structure to hold customer information struct Customer { char name[50]; char phoneNumber[15]; float usage; float totalBill; }; struct Customer customers[100]; // Array to store customer data int customerCount = 0; // Variable to keep track of the // number of customers // Function to add a new customer record void addRecord() { if (customerCount < 100) { printf("\nEnter name: "); scanf(" %[^\n]s", customers[customerCount].name); printf("Enter phone number: "); scanf("%s", customers[customerCount].phoneNumber); printf("Enter usage (in minutes): "); scanf("%f", &customers[customerCount].usage); customers[customerCount].totalBill = customers[customerCount].usage * 0.1; customerCount++; printf("\nRecord added successfully!\n"); } else { printf("\nMaximum number of records reached!\n"); } } // Function to view the list of customer records void viewRecords() { printf("\nName\tPhone Number\tUsage(min)\tTotal " "Bill($)\n"); for (int i = 0; i < customerCount; i++) { printf("%s\t%s\t%.2f\t\t%.2f\n", customers[i].name, customers[i].phoneNumber, customers[i].usage, customers[i].totalBill); } } // Function to modify a customer record void modifyRecord(char phoneNumber[]) { for (int i = 0; i < customerCount; i++) { if (strcmp(customers[i].phoneNumber, phoneNumber) == 0) { printf( "\nEnter new usage (in minutes) for %s: ", customers[i].name); scanf("%f", &customers[i].usage); customers[i].totalBill = customers[i].usage * 0.1; printf("\nRecord modified successfully!\n"); return; } } printf("\nRecord not found!\n"); } // Function to view payment for a customer void viewPayment(char phoneNumber[]) { for (int i = 0; i < customerCount; i++) { if (strcmp(customers[i].phoneNumber, phoneNumber) == 0) { printf( "%s\t%s\t%.2f\t\t%.2f\n", customers[i].name, customers[i].phoneNumber, customers[i].usage, customers[i].totalBill); return; } } printf("\nRecord not found!\n"); } // Function to delete a customer record void deleteRecord(char phoneNumber[]) { for (int i = 0; i < customerCount; i++) { if (strcmp(customers[i].phoneNumber, phoneNumber) == 0) { for (int j = i; j < customerCount - 1; j++) { customers[j] = customers[j + 1]; } customerCount--; printf("\nRecord deleted successfully!\n"); return; } } printf("\nRecord not found!\n"); } // Function to display menu options void displayMenu() { printf("\n1. Add New Record\n"); printf("2. View List of Records\n"); printf("3. Modify Record\n"); printf("4. View Payment\n"); printf("5. Delete Record\n"); printf("6. Exit\n"); } int main() { int choice; char phoneNumber[15]; while (1) { displayMenu(); printf("Enter your choice: "); scanf("%d", &choice); switch (choice) { case 1: addRecord(); break; case 2: viewRecords(); break; case 3: printf( "\nEnter phone number to modify record: "); scanf("%s", phoneNumber); modifyRecord(phoneNumber); break; case 4: printf( "\nEnter phone number to view payment: "); scanf("%s", phoneNumber); viewPayment(phoneNumber); break; case 5: printf( "\nEnter phone number to delete record: "); scanf("%s", phoneNumber); deleteRecord(phoneNumber); break; case 6: return 0; default: printf("\nInvalid choice! Please try again.\n"); } } return 0; } |
Output
1. Customer Dashboard
2. Add New Record
3. View Payments
Execution of Program
Telecom Billing System in C
In this article, we are going to create a basic Telecom Billing System using the C programming language. This system allows users to perform operations such as adding new customer records, viewing the list of records, modifying existing records, viewing payment details, searching for specific records, and deleting records.
Contact Us