ASAP Please help me :(

[phlowt]

I'm stuck,
I cant find anything that's wrong.maybe im just sleepy and I have to give this in tomorrow morning! which is 8 hours away.
so anybody please..help me.

class subject
{
private:
char subjectName[20];
char kod[8];
int credit;
public:
subject (char *,char *,int k=3);
void getDetail();
friend void changeSubject(subject);
};
subject:: subject (char *sub,char *kd,int kre)
{ strcpy(subjectName,sub);
strcpy(kod,kd);
credit = kre;
}
void subject:: getDetail()
{
cout << "\n\nSubject Name : " << subjectName;
cout << "\nSubject Code : " << kod;
cout << "\nCredit hours : " << credit;
}


void changeSubject(subject sub);
{ cout << "\nInsert new subject name: "; Access class
cin >> sub. subjectName;
cout << "\nInsert new subject code: ";
cin >> sub.kod;
cout << "\n Get new information for the subject.";
sub. getDetail();

}
main()
{ subject DS("Data Structure C++","SCJ2013");
DS.getDetail();
( )
changeSubject(DS);
cout << "\n View the subject information again: ";
DS.getDetail();
getch();

[MikeyBoy]

I cant find anything that's wrong.
[...]
so anybody please..help me.

Um... if you can't find anything wrong, then what is it you're asking us to help with?

[phlowt]

my bad...I know there's something wrong with it...
I've left using C++ for some time, and I seem to forgotten it.
and I don't even know what's wrong with it. I tried to run but there were errors. I've adde the #include <iostream.h> and #include <string.h>

[yhu420]

We can't help you since we don't have the compiler error.
Or can we?

And please use the code embed