This header is part of the algorithm library.

Comments serve as a sort of in-code documentation. When inserted into a program, they are effectively ignored by the compiler; they are solely intended to be used as notes

Executes init-statement once, then executes statement and iteration_expression repeatedly

void swap( unordered_set& other );

char* str() const;

Defined in header

Template declarations (class,

Defined in header

The preprocessor supports conditional compilation of parts of source file. This behavior is controlled by #if, #else, #elif, #ifdef

const char* name() const;