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Showing posts from January 15, 2026

Important terms in C

  Tokens   In C programming language, tokens are the basic building blocks of a program. Tokens can be classified into several categories, and one important category is identifiers.   Identifiers : -Identifiers are names used to identify variables, functions, types, labels, etc.   Rules for identifiers in C:   Must start with a letter (a-z or A-Z) or underscore (_).   Can be followed by letters, digits (0-9), or underscores.   Cannot be a keyword.   Case-sensitive (e.g., "my Variable" and "my variable" are different identifiers).   Keywords : -Keywords are reserved words with predefined meanings in the C language.  Total 32 Keywords in C.    Examples: if, else, for, while, int, char, etc.                                             ...