Welcome to our exploration of C tokens. In C programming, tokens are the smallest meaningful units that the compiler can recognize. Think of them as the building blocks of any C program. Every C program is essentially a sequence of these tokens. A token is an individual element that cannot be broken down further while maintaining its meaning in the program. Let's look at a simple C program to understand this concept better.
C tokens are classified into six main types. First, we have keywords, which are reserved words with predefined meanings. Second, identifiers are user-defined names for variables and functions. Third, constants represent fixed values that don't change. Fourth, strings are sequences of characters. Fifth, operators perform specific operations. Finally, special symbols include punctuation marks like semicolons and braces.