string和NSString的转换的参考代码

string _name = _current_medication.get_medication_name();

NSString *medicationName = [NSStringstringWithCString:_name.c_str() encoding:NSUTF8StringEncoding ];

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NSString *sql1 = [NSStringstringWithFormat:@"update ....."];

 

sqlite3_exec(m_base, [sql1 UTF8String], 0, 0, NULL);