Question

I have this header file, zeeheader.h, and I wrote some classes in it, I’m having problems giving a string as a parameter to one of the functions:

class DeliTest
{

public:

    void DeliCheck(Stack*,string);
    void ComCheck (unsigned,string);
    bool EofCheck (unsigned,string);
};

As I was implementing it in the cpp file, I added #include to it, it seemed to be working, for example: as I was writing the “data.” I got the “length()” appear by the intellisense, so I thought that it was working, but it wasn’t. I got errors like:

syntax error : identifier ‘string’
overloaded member function not found in ‘DeliTest’

this is one of the functions in the cpp file:

bool DeliTest::EofCheck(unsigned i, string data)
{

    if (i == data.length()-1)
        return 1;
    return 0;

}

Am I supposed to be adding something to the header file?

Answer 1

Make sure to #include <string>, and because strings are in the std namespace, you should declare your strings as std::string in the header.

As a sidenote, make sure you do NOT declare using namespace std; in your header files. This would cause any other headers or c/cpp files that include this header to also use the std namespace. This is called polluting the namespace.