如何让 G++ 在 Linux 上链接我的头文件？

Question

I have had this problem for a while where my Linux system can't seem to link any header files(and yes, I have checked: they all exist in the right locations). Here is a basic script called HelloWorld.cpp:

#include <iostream>
#include </usr/include/string.h>

int main(){
string hi = "Hello WOrld!";
return 0;
}

And this is the error output from the terminal:

HelloWorld.cpp: In function int main():
HelloWorld.cpp:5:1: error: string was not declared in this scope
 string hi = "Hello WOrld!";
 ^~~~~~
HelloWorld.cpp:5:1: note: suggested alternative:
In file included from /usr/include/c++/8/iosfwd:39,
                 from /usr/include/c++/8/ios:38,
                 from /usr/include/c++/8/ostream:38,
                 from /usr/include/c++/8/iostream:39,
                 from HelloWorld.cpp:1:
/usr/include/c++/8/bits/stringfwd.h:74:33: note:   ‘std::__cxx11::string’
    typedef basic_string<char>    string;
                                 ^~~~~~

What can I do?

Answer 1

你需要#include <string>

Answer 2

This seems like the best answer posted so far:

string.h is for C-style string routines like strlen. You want to include (no .h), and use std::string hi = "Hello World!"; -jkb

Thank you for answering my question.