Phone Number

Challenge Overview

Clean up user-entered phone numbers so that they can be sent SMS messages.

Visit the phone-number exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

View Community Solutions

The following are the top 3 community solutions by stars:

Solution 1 by @Karnikapm (⭐ 0) — View on Exercism
Solution 2 by @executivejoe (⭐ 0) — View on Exercism
Solution 3 by @shikov (⭐ 6) — View on Exercism

Source: Exercism c/phone-number

💡 View Solution

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdbool.h>
#include "phone_number.h"
enum {
  max_length = 11,
  area_code_offset = 0,
  exchange_code_offset = 3
};