> Hi Everyone,

> I am learning C++. Entered this below program. Using Borland C++ Compiler (5.5.1 for Win32), Linker (5.00). I get errors. Can someone tell me, what exactly is wrong. Thanks in advance, Rajesh.

> // program begin

> #include <iostream.h>

>    cout << "\nCount is " << f1.getcount();
>    cout << "\nCount is " << f2.getcount();
>    cout << "\nCount is " << f3.getcount();
> }

> // program end

>> Hi Everyone,

>> I am learning C++. Entered this below program. Using Borland C++ Compiler (5.5.1 for Win32), Linker (5.00). I get errors. Can someone tell me, what exactly is wrong. Thanks in advance, Rajesh.

>First, you are in the wrong newsgroup, although the way they name
>these groups does not make it easy to see that.  Your compiler is
>supported in news:borland.public.cppbuilder.commandlinetools, since it
>is the command line compiler from C++ Builder.

>> Error message I get is : Unresolved external 'foo::count'

>> // program begin

>> #include <iostream.h>

>There has been an ANSI/ISO standard for C++ for almost four years now,
>drop the obsolete headers and learn the real language:

>#include <iostream>
>using namespace std;

>> class foo
>> {
>>        private:
>>                static int count;
>>        public:
>>                foo()
>>                {
>>                        count++;
>>                }
>>                int getcount()
>>                {
>>                        return count;
>>                }
>> };

>The definition of a class does not actually create or instantiate any
>objects.  It does not create any members of the class, and it does not
>create the one necessary object of each class static variable.  You
>need to define that in a source file outside the class:

>int foo::count;

>> void main()

>"void main()" has never been legal in C++ (or C either, for that
>matter).  Both languages require that main() be defined with a return
>type of int in a hosted environment.  If you turn up the compiler
>warning levels, it would tell you that.

>int main()
>> {
>>        foo f1, f2, f3;

>>        cout << "\nCount is " << f1.getcount();
>>        cout << "\nCount is " << f2.getcount();
>>        cout << "\nCount is " << f3.getcount();
>> }

>> // program end