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C++ streambuf - underflow
Description
It is used to get character and returns the character at the current get pointer position (gptr), if one is available. Otherwise it returns the end-of-file value (traits_type::eof()).
Declaration
Following is the declaration for std::basic_stringbuf::underflow.
int_type underflow();
Parameters
none
Return Value
It returns the character at the current get pointer position (gptr), if one is available. Otherwise it returns the end-of-file value (traits_type::eof()).
Exceptions
Basic guarantee − if an exception is thrown, the object is in a valid state.
Data races
It accesses the basic_stringbuf object.
streambuf.htm
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