std::string
[<cstring>](https://texonom.com/cstring-ef7bc90c83d2437d8a7b3441e03ac761) 


## String class use templates <string>
### string copy
```typewhile (*a++ = *b++) {}```
but bad style



```typestring s3 = "Hello Mom!"```
**Note c-string "Hello Mom!" automatically converted to string type**



### Member functions
- `.length()`
- `.at(i)`




> [[C++] to_string 함수에 대해서 (int to string)](https://blockdmask.tistory.com/334)





