class method error in c++

Question

I am getting an error when I declare a class:

#include <iostream>
#include "testing/test.h"
#include <string>
using namespace std;

int main(void)
{    
    test links;
    string content="this is an string";
    links.getcont(content);
}

test.h

#ifndef TEST_H_
#define TEST_H_
#include<string>
using namespace std;
class test {    
  public:    
    string getcont(string content); 

};

#endif /* TEST_H_ */

test.cpp

#include "test.h"
#include <iostream>
using namespace std;    
string getcont(string content)    
{
    cout << content;
    return content;
}

When I run this I get this error:

undefined reference to test::getcont(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)

That can't be the whole error message. Oh, and what is links.getlinks? — Oliver Charlesworth
– Oliver Charlesworth, Commented Sep 3, 2010 at 19:35
I think you are missing some of the error. That is just the type you are using. Can you please add the full error message. — linuxuser27
– linuxuser27, Commented Sep 3, 2010 at 19:35
undefined reference to test::getcont(std::basic_string<char, std::char_traits<char>, std::allocator<char> >) ) — raj
– raj, Commented Sep 3, 2010 at 19:36

Tom · Accepted Answer · 2010-09-03 19:42:45Z

8

Well , in your test.cpp file replace the getcont function for this

string test::getcont(string content){ //code here; }

The problem is that you are not saying that getcont is a member function of the test class.

Also, consider making it a const function and passing a const string reference

string
test::getcont( const string& content) const
{
    return content;
}

edited Sep 3, 2010 at 19:42

answered Sep 3, 2010 at 19:37

Tom

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