Unextracting a single character.
Declared in <bslstl_istringstream.h>
__istream_type&
putback(char_type __c);If rdbuf() is not null, calls rdbuf()->sputbackc(c).
If rdbuf() is null or if sputbackc() fails, sets badbit in the error state.
This function first clears eofbit. Since no characters are extracted, the next call to gcount() will return 0, as required by DR 60.
*this
| Name | Description |
|---|---|
| __c | The character to push back into the input stream. |