How to import/ include string in cpp

Question

I would like to use the string class. Should I also involve using namespace std;?

I thought #include <string> would be enough but in CLion when only one of these two (namespace or include) is absent, there are some errors.

What makes things more complicated, is that there is <string> or <strings.h>. What's the difference?

Answer 1

<string> is C++ and provides the std::string class.

<string.h> is C (the C++ equivalent is <cstring>) and only provides functions to work on char*.

Don't use using namespace std; (see the C++ Core Guidelines).