C :: Write A Main Function That Parses A Text Document And Prints Out All Of Phone Numbers Found

You should implement the following function:

int is_phone_number(char* string)
This function will take in a string and return 1 if it looks like a phone number 0 otherwise. A phone number takes the form (xxx)-xxx-xxxx where the xs are digits 0-9. So for example (123)-456-7890 is a valid phone number while 123 456-7890 is not.

You should also write a main function that parses a text document and prints out all of the phone numbers found. Hint, look up the strtok function.

Sample input:
Please call me at (123)-456-789 sometime tonight.

Sample output:
Phone number : (123)-456-7890