Contact Management System in C

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

#define MAX_CONTACTS 100

// Structure to represent a contact
struct Contact {
    char name[100];
    char phone[15];
    char email[100];
};

// Function to add a new contact
void addContact(struct Contact contacts[], int *contactCount) {
    if (*contactCount >= MAX_CONTACTS) {
        printf("Contact list is full. Cannot add more contacts.\n");
        return;
    }

    struct Contact newContact;

    printf("Enter Name: ");
    scanf("%s", newContact.name);

    printf("Enter Phone: ");
    scanf("%s", newContact.phone);

    printf("Enter Email: ");
    scanf("%s", newContact.email);

    contacts[*contactCount] = newContact;
    (*contactCount)++;

    printf("Contact added successfully.\n");
}

// Function to display all contacts
void displayContacts(struct Contact contacts[], int contactCount) {
    if (contactCount == 0) {
        printf("No contacts to display.\n");
        return;
    }

    printf("Name\tPhone\tEmail\n");
    for (int i = 0; i < contactCount; i++) {
        printf("%s\t%s\t%s\n", contacts[i].name, contacts[i].phone, contacts[i].email);
    }
}

int main() {
    struct Contact contacts[MAX_CONTACTS];
    int contactCount = 0;
    int choice;

    while (1) {
        printf("\nContact Management System Menu:\n");
        printf("1. Add Contact\n");
        printf("2. Display Contacts\n");
        printf("3. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addContact(contacts, &contactCount);
                break;
            case 2:
                displayContacts(contacts, contactCount);
                break;
            case 3:
                exit(0);
            default:
                printf("Invalid choice. Please try again.\n");
        }
    }

    return 0;
}