Which C Standard Library Headers Guarantee the Inclusion of Others or Access to Functions?

Guaranteed Header Inclusions in the C Standard Library

The C standard library employs an unspecified mechanism for including headers, making it risky to assume that one header includes another. However, there are certain cases where one header is guaranteed to include another or provide access to functions that would otherwise require the inclusion of a different header.

Guaranteed Header Inclusions

• : Included by:

• : Includes:

• : Includes:

• : Includes:

• Free Function Templates in : Available when including:

• Functions in : Available when including:

  • • begin, end, std::swap(T&, T&), std::swap(T (&a)[N], T (&b)[N])

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