Linking Errors

im getting better at all this stuff. i can fix most of my errors on my own. but im getting linking errors now and i have no clue how to fix them. anybody know whats wrong with this?


heres my errors im getting:

Ch09Ex02.obj : error LNK2001: unresolved external symbol "public: void __thiscall NonFiction::showNonFiction(void)" (?showNonFiction@NonFiction@@QAEXXZ)
Ch09Ex02.obj : error LNK2001: unresolved external symbol "public: void __thiscall Fiction::showFiction(void)" (?showFiction@Fiction@@QAEXXZ)
Debug/Ch09Ex02.exe : fatal error LNK1120: 2 unresolved externals

Code:

---

#include<iostream.h>
#include<string.h>

class Book
{
        protected:
                char Title[20];
                char Author[20];
        public:
                void getData(const char title[20], const char author[20]);
                void showData();
};

class Fiction:public Book
{
        private:
                int readingLevel;
        public:
                void getData(const char title[], const char author[], const int level);
                void showFiction(void);
};

class NonFiction:public Book
{
        private:
                int numPages;
        public:
                void getData(const char title[], const char author[], const int pages);
                void showNonFiction(void);
};
void Fiction::getData(const char title[], const char author[], const int level)
{
        strcpy(Title,title);
        strcpy(Author, author);
        readingLevel=level;
}
void NonFiction::getData(const char title[], const char author[], const int pages)
{
        strcpy(Title, title);
        strcpy(Author, author);
        numPages=pages;
}

void main()

{

  Fiction novel;

  NonFiction manual;

  novel.getData("Scarlet Letter","Hawthorne",10);

  manual.getData("Log Cabin Building","Landers",328);

  novel.showFiction();

  manual.showNonFiction();


 }

---

looks to me like you have forgotten to write 2 functions...

NonFiction::showNonFiction()
and
Fiction::showFiction()

The compiler can see the decs but not the defs. Not a problem to a compiler but it is to a linker as the linker is trying to find the code for the function calls above and it cant so it chokes.