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How many functions are there in c?

Updated: 8/21/2019
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The language itself has no functions at all. All functions are either provided by a library or are user-defined. The C89 standard library has fewer than 200 functions but C99 has a few more. Although the standard library is considered part of the language, the library and the language are physically separate. However, the language does have built-in operators like sizeof() that are function-like. But unlike actual functions which are evaluated at runtime, these operators are evaluated at compile time.

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Q: How many functions are there in c?
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