Token in C++

A token is the smallest individual unit of a C++ program that has meaning to the compiler. When the compiler reads your code, it doesn't look at it letter by letter — it breaks the code into small meaningful pieces called tokens, and then checks whether they are arranged correctly.

Think of it like an English sentence. A sentence is made up of words — the smallest meaningful units of the sentence. In the same way, a C++ program is made up of tokens — the smallest meaningful units of the program.

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