Class Problems >.<

Well I'm getting a Linker error for the two functions in my class i created.

Code:

 [Linker error] undefined reference to `Customer::GetLines(char*)'
  [Linker error] undefined reference to `Customer::GetData(int)' 
  ld returned 1 exit status

I am not sure what it is yelling at me for, please give me an idea. =D

Originally Posted by crateofrum

Well I'm getting a Linker error for the two functions in my class i created.

Code:

 [Linker error] undefined reference to `Customer::GetLines(char*)'
  [Linker error] undefined reference to `Customer::GetData(int)' 
  ld returned 1 exit status

I am not sure what it is yelling at me for, please give me an idea. =D

It sounds like you may have only declared these functions and failed to define them. Perhaps you could also post the offending code?

I will gladly post my code =D
EDIT : Updated with Dave's Correction's (Thanks Dave =D )

Code:

#include <iostream>      /*        This is another way to make comments      */
#include <iomanip>       /*    These are the headers we need, so remember to */
#include <fstream>       /*  use them all wisely. Hopefully you will learn   */
#include <sstream>       /*  past where i have gotten with these tutorials   */
#include <string>        /*    You are our programming legacy, feel honoured.*/


using namespace std; 
using namespace std::ios;

class Customer //Class for the C++ Tutorial Register
{
   private:
   public:

          ostringstream File_ID;
          ofstream b_file();
          Customer();
          ~Customer(); 
          char Customer::GetData(int id2);
          int id2;
          int blah;
          char* file;
          char* memblock;
          int y;
          int Customer::GetLines(char *file);
            
}search;

Customer::Customer() //Constructor for the C++ Class
{         
};
Customer::~Customer() //destructor for the C++ Class
{ 
}; 

int Customer::GetLines(char *file)
{
        int y = 0;
        string line;
        
        ifstream productlist(file);
        if(productlist.is_open())
        while (! productlist.eof() )
            {
              getline (productlist,line);
              y++;
            }
            productlist.close();

        return y; //Returns the number of lines in the .txt file.
}; 
 
char Customer::GetData(int *id2) 
{ 
ostringstream File_ID;

File_ID<<id2 + ".txt";
fstream b_file(File_ID.str().c_str(), in|ate);
fstream::pos_type size;
char * memblock;
  if (b_file.is_open())
  {
    size = b_file.tellg();
    memblock = new char [size];
    b_file.seekg (0, ios::beg);
    b_file.read (memblock, size);
    b_file.close();
    }
        return memblock[size];  //Returns the text from inside the File_ID.txt
  
};

So I just had a thought, do you also need to see the main code that uses this class maybe? By the way if u are wondering about the search;'s i didnt know where to declare an object of the class for certain cases. and sorry for being the noob who asks questions =\

Oh, my.

I don't believe this is correct,

Code:

using namespace ios;

do you mean this?

Code:

using std::ios;

My compiler complains here:

Code:

char GetData(id2);

Do you mean this?

Code:

char GetData(int *id2);

C++ is case sensitive.

Code:

   int GetLines(char *file);
//...
int Customer::Getlines(char *file)

What is with these?

Code:

}search;

Sorry, there's still more, just listen to your compiler.
[edit]Visit the FAQ.

thanks for the help, though its still giving me the same darn error msgs =\
I've gone over to make sure im declaring the functions the right way, i wish the tutorial gave a little more complex class example.
Thx for the help tho =D hopefully i can get it working by sunrise !