Project Of CONTACT MANAGEMENT SYSTEM IN C PROGRAMMING WITH SOURCE CODE

File handling, data structure, functions, and pointers are the main things which make up this simple c mini project The key features of contact management system are listed below:

• Add new contacts: with information such as name, phone number, address, and email
• List all contacts: lists all the contacts stored in file with their respective contact details
• Search contacts: based on name and phone number
• Edit contacts: edit information given while adding the contacts – name, phone number, address, and email

AUTHOR: UNKNOWN

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LANGUAGE:  ENGLISH

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Project Of Contact Management System in ‘C’ Language Download Link

A Contact Management System (CMS) is a useful project for managing contact information like names, phone numbers, and email addresses. Here's a complete C program for a basic CMS with functionalities such as adding, searching, listing, and deleting contacts.

Features:

1. Add a Contact: Store contact information.
2. List Contacts: Display all saved contacts.
3. Search Contacts: Find a contact by name.
4. Delete a Contact: Remove a contact by name.
5. Exit: Save and close the program.

Source Code

Here’s the complete implementation:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX 100
#define NAME_LEN 50
#define PHONE_LEN 15
#define EMAIL_LEN 50

typedef struct {
    char name[NAME_LEN];
    char phone[PHONE_LEN];
    char email[EMAIL_LEN];
} Contact;

Contact contacts[MAX];
int totalContacts = 0;

void addContact() {
    if (totalContacts >= MAX) {
        printf("Contact list is full!\n");
        return;
    }
    printf("Enter Name: ");
    scanf(" %[^\n]", contacts[totalContacts].name);
    printf("Enter Phone: ");
    scanf("%s", contacts[totalContacts].phone);
    printf("Enter Email: ");
    scanf("%s", contacts[totalContacts].email);
    totalContacts++;
    printf("Contact added successfully!\n");
}

void listContacts() {
    if (totalContacts == 0) {
        printf("No contacts available.\n");
        return;
    }
    printf("\nList of Contacts:\n");
    printf("---------------------------------------------------\n");
    printf("%-20s %-15s %-30s\n", "Name", "Phone", "Email");
    printf("---------------------------------------------------\n");
    for (int i = 0; i < totalContacts; i++) {
        printf("%-20s %-15s %-30s\n", contacts[i].name, contacts[i].phone, contacts[i].email);
    }
    printf("---------------------------------------------------\n");
}

void searchContact() {
    char searchName[NAME_LEN];
    printf("Enter name to search: ");
    scanf(" %[^\n]", searchName);
    int found = 0;
    for (int i = 0; i < totalContacts; i++) {
        if (strcmp(contacts[i].name, searchName) == 0) {
            printf("\nContact Found:\n");
            printf("Name: %s\n", contacts[i].name);
            printf("Phone: %s\n", contacts[i].phone);
            printf("Email: %s\n", contacts[i].email);
            found = 1;
            break;
        }
    }
    if (!found) {
        printf("Contact not found.\n");
    }
}

void deleteContact() {
    char deleteName[NAME_LEN];
    printf("Enter name to delete: ");
    scanf(" %[^\n]", deleteName);
    int found = 0;
    for (int i = 0; i < totalContacts; i++) {
        if (strcmp(contacts[i].name, deleteName) == 0) {
            for (int j = i; j < totalContacts - 1; j++) {
                contacts[j] = contacts[j + 1];
            }
            totalContacts--;
            printf("Contact deleted successfully!\n");
            found = 1;
            break;
        }
    }
    if (!found) {
        printf("Contact not found.\n");
    }
}

void saveContactsToFile() {
    FILE *file = fopen("contacts.dat", "wb");
    if (file == NULL) {
        printf("Error saving contacts!\n");
        return;
    }
    fwrite(&totalContacts, sizeof(int), 1, file);
    fwrite(contacts, sizeof(Contact), totalContacts, file);
    fclose(file);
}

void loadContactsFromFile() {
    FILE *file = fopen("contacts.dat", "rb");
    if (file != NULL) {
        fread(&totalContacts, sizeof(int), 1, file);
        fread(contacts, sizeof(Contact), totalContacts, file);
        fclose(file);
    }
}

int main() {
    int choice;
    loadContactsFromFile();

    do {
        printf("\nContact Management System\n");
        printf("1. Add Contact\n");
        printf("2. List Contacts\n");
        printf("3. Search Contact\n");
        printf("4. Delete Contact\n");
        printf("5. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
        case 1:
            addContact();
            break;
        case 2:
            listContacts();
            break;
        case 3:
            searchContact();
            break;
        case 4:
            deleteContact();
            break;
        case 5:
            saveContactsToFile();
            printf("Exiting the program. Goodbye!\n");
            break;
        default:
            printf("Invalid choice. Please try again.\n");
        }
    } while (choice != 5);

    return 0;
}

Key Features:

1. Data Persistence: Contacts are saved to a file (contacts.dat) and loaded automatically when the program starts.
2. User-Friendly Interface: Easy-to-use menu-driven approach.

Compilation and Execution:

1. Save the code in a file named contact_management.c.
2. Compile it using:

   gcc contact_management.c -o contact_management
   

3. Run the program:

   ./contact_management
   

This program is simple yet functional and can be extended to include additional features like contact sorting, advanced search options, or a graphical interface.