Step 3: Create the Contact Book Function Framework

Problem Statement

Create the permanent function framework that will hold the Contact Book modules.

Add function prototypes and empty function definitions for:
add_contact,
display_contacts,
search_contact,
update_contact, and
delete_contact.

Retain all code and initialization behavior from Task 2.

The new functions should not yet perform contact operations; they establish stable extension points that later tasks will fill incrementally.

Input Format

No input is required.

Output Format

Print the Task 2 initialization output followed by: Modules Ready.

Constraints

The five required functions must exist with no parameters and void return type. Existing Contact structure, global phonebook array, contact_count, and Task 2 output must remain intact.

Sample Output

Contact Book Ready.
Phonebook Capacity: 100
Contacts: 0
Modules Ready.

Explanation

Creating the module framework now prevents future tasks from restructuring the main program. Every later feature can be added inside these permanent functions while preserving the complete earlier codebase.

Starter Code

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

struct Contact {
    int id;
    char name[50];
    char phone[15];
};

struct Contact phonebook[100];
int contact_count = 0;

// Write your code here

int main() {
    printf("Contact Book Ready.");
    printf("\nPhonebook Capacity: %d", sizeof(phonebook)/sizeof(phonebook[0]));
    printf("\nContacts: %d", contact_count);
    // Write your code here
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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