1.) C standards:
C standards are formal specifications that define the syntax, semantics, and library functions of the C programming language to ensure portability and consistency across different compilers and systems.
Thank you for reading this post, don't forget to subscribe!- Since its development in 1972, the C language has undergone several standardizations to improve its features, fix inconsistencies, and maintain compatibility.
- These standards are established by organizations like ANSI (American National Standards Institute) and ISO (International Organization for Standardization).
- Each standard version introduces new features and updates.
Major C Standards:
2.) C Character Set:
The C character set refers to the collection of valid characters that can be used in writing C programs, including letters, digits, special symbols, and whitespace characters.
- These characters form the basic building blocks of C programs.
- They are used to form constants, variables, operators, and other elements of the program.
- The character set is typically based on the ASCII standard.
C Character Set Categories:
a.) Letters (Alphabets):
- Uppercase: A–Z
- Lowercase: a–z
- Used for naming variables, functions, etc.
b.) Digits:
- 0–9
- Used in numeric constants and identifiers.
c.) Special Characters:
- Symbols like + – * / % ; , {} [] () # & ^ ~ ! = < > etc.
- Used in expressions, control statements, and syntax.
d.) Whitespace Characters:
- Space ( ), tab (\t), newline (\n)
- Used to separate tokens and format code for readability.