in the `ex13_44_47.h`, the size and length function is different. ~~~cpp size_t size() const { return end - elements; } size_t length() const { return end - elements - 1; } ~~~ But [this website](https://www.cplusplus.com/reference/string/string/size/?kw=string%3A%3Asize) says that they return the same value, they are synonyms.
in the
ex13_44_47.h, the size and length function is different.But this website says that they return the same value, they are synonyms.