Token Identification Program - p3.c
What is the purpose of the token identification program p3.c?
The program reads string tokens and determines their types based on specific requirements.
What are the different types of tokens that the program can identify?
- Positive Integer - Negative Integer - Binary Number - GUID - Positive Floating-Point Number - Negative Floating-Point Number - Other
Answer:
A token identification program, named p3.c, is designed to read a series of string tokens and determine their types based on specific requirements. It classifies tokens as positive integers, negative integers, binary numbers, GUIDs, positive floating-point numbers, negative floating-point numbers, or other tokens that do not match any of these types.
Explanation:
A token identification program, named p3.c, is designed to read a series of string tokens until the end-of-file (EOF) is reached. The program then determines the type of each token based on the following requirements:
Positive Integer: The token only contains one or more digits.
Negative Integer: The token starts with a '-' and is followed by one or more digits.
Binary Number: The token starts with '0b' (zero and lowercase 'b') and is followed by one or more '0's and '1's.
GUID (Globally Unique IDentifier): The token contains 36 characters in the format XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX, where 'X' is a hex digit.
Positive Floating-Point Number: The token is a double or float and contains only digits except for a decimal point located between digits.
Negative Floating-Point Number: The token starts with a '-' and is followed by only digits except for a decimal point located between digits.
Other: If the token does not match any of the types above.
The program uses specific patterns and rules to identify the type of each token. It checks for the presence of certain characters or patterns at the beginning of the token and then applies the corresponding classification. If a token matches one of the requirements, the program outputs the corresponding type. If a token does not match any of the types, the program outputs 'The token cannot be identified'.
By implementing this program, you can efficiently analyze and categorize different types of tokens in a given input, providing valuable information about the nature of the data.