char_traits::int_type

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char_traits::int_type

typedef T1 int_type;

The type is (typically) an integer type T1 that describes an object that can represent any element of the controlled sequence as well as the value returned by eof(). It must be possible to type cast a value of type E to int_type then back to E without altering the original value. In addition, the expression int_type('\0') must yield the code that terminates a null-terminated string for elements of type E. Also, the expression int_type('\n') must yield a suitable newline character of type E.