Thread: Simple class doesn't work

Code:

-------------------------------------------------------------------------------
//integer.h

#ifndef INTEGER_H

#define INTEGER_H
#include <iostream>
class Integer
{
    private:
        int value;
    
    public:
        Integer();               //constructor
        ~Integer();              //destructor
        void setValue(int number);              //sets value
        int returnValue();           //returns value
        
}

#endif
          
--------------------------------------------------------------------------------
//integer.cpp
#include "integer.h"
#include <iostream>

Integer::Integer()
{    
    value = 0;  
    std::cout << "Constructor used." << std::endl;
}

Integer::~Integer()
{
    std::cout << "Destructor sued." << std::endl;
}

void Integer::setValue(int number)
{
    value = number;
}

int Integer::returnValue()
{
    return value;
}

----------------------------------------------------------------------------------
//main.cpp
#include "integer.h"
#include <iostream>

int main()
{
    Integer integer1;
    Integer interger2;
    
    integer1.setValue(1);
    integer2.setValue(2);
    
    std::cout << "The value of integer1 is "
              << integer1.returnValue
              << "."
              << std::endl;
    
    std::cout << "The value of integer2 is "
              << integer2.returnValue
              << "."
              << std::endl;
              
    system("PAUSE");
    return 0;
}

-------------------------------------------------------------------------------
Line              File                                      Message
5              integer.cpp        ISO C++ forbids defining types within return type
5              integer.cpp        return type for constructor invalid
                Makefile.win       [build error] [integer.o] Error 1

What's the problem?

Originally posted by Codeplug

Code:

};

gg

Do you mean that I need the ';' for my constructors and destructors? I tried that, but nothing changed.

std::cout << "The value of integer1 is "
<< integer1.returnValue ()
<< "."
<< std::endl;

How do you call a member function?

Originally posted by pratip
How do you call a member function?

wups ! that's true. But the same errors is still there....

You've forgotten a rule about classes:

Code:

class someclass
{
//...
}; //<-- semicolon

Edit: Beaten...

Here is the code I used and it works fine with gcc compiler on Linux after some editing. I can't remember where I edited. Its upto you to figure it out :-)

In main.cpp check the declaration of interger2

Code:

//integer.h
#ifndef INTEGER_H

#define INTEGER_H
#include <iostream>

class Integer
{
 private:
  int value;
    
 public:
  Integer();               //constructor
  ~Integer();              //destructor
  void setValue(int number);              //sets value
  int returnValue();           //returns value
        
};

#endif

------------------------------------------------------------

Code:

//integer.cpp
#include "integer.h"
#include <iostream>

Integer::Integer()
{    
  value = 0;  
  std::cout << "Constructor used." << std::endl;
}

Integer::~Integer()
{
  std::cout << "Destructor sued." << std::endl;
}

void Integer::setValue(int number)
{
  value = number;
}

int Integer::returnValue()
{
  return value;
}

--------------------------------------

Code:

//main.cpp
#include "integer.h"
#include <iostream>

int main()
{
  Integer integer1;
  Integer integer2;
    
  integer1.setValue(1);
  integer2.setValue(2);
    
  std::cout << "The value of integer1 is "
	    << integer1.returnValue()
	    << "."
	    << std::endl;
    
  std::cout << "The value of integer2 is "
	    << integer2.returnValue()
	    << "."
	    << std::endl;
              
  system("PAUSE");
  return 0;
}