string s = "\r\n\t \t这是随便写的一句话。\t\t " ; size_t n = s.find_last_not_of( " \r\n\t" ); if ( n != string::npos ) { s.erase( n + 1 , s.size() - n ); } n = s.find_first_not_of ( " \r\n\t" ); if ( n != string::npos ) { s.erase( 0 , n ); } |
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