parameter values compiler error

Hello, i am hoping someone can help me with this code error. I am reading Sams Teach Yourself C++ in 21 days and i am using Dev C++ as the compiler. Right now i am stumped, I only have one error stopping me from compiling my program and running it. I have looked over the code in the book and have written it down exactly.
The error is: ISO C++ forbids declaration of 'VolumeCube' with no type.
And here is the code:

Code:

//demonstrates use of default parameter values
#include <iostream>
int VolumeCube(int length, int width = 25, int height = 1);

int main()
{
    int length = 100;
    int width = 50;
    int height = 2;
    int volume;
    
    volume = VolumeCube(length, width, height);
    std::cout << "First volume equals: " << volume << 
    "\n";
    
    volume = VolumeCube(length, width);
    std::cout << "Second time volume equals: " <<
    volume << "\n";
    
    volume = VolumeCube(length);
    std::cout << "Third time volume equals; " << volume << "\n";
    return 0;
}

VolumeCube (int length, int width, int height)
{
               
               return (length * width * height);
               }

VolumeCube needs a return type where you define it. You've got one where you prototyped it, but not at the definition.

You left out the int return type in the definition of VolumeCube.

Did you REALLY write it down exactly as it is in the book? If "Sams Teach Yourself C++ in 21 days" defines functions without return type, I would recommend leaving this book.

I'm sorry if this is a stupid question, but where would i define this, it doesn't really specify this. And yes i copied it exactly as it is in the book. I haven't had trouble with this book up until this point. Thank you very much for everyone's input.

Basically, change this:

Code:

VolumeCube (int length, int width, int height)
{

to:

Code:

int VolumeCube (int length, int width, int height)
{

Originally Posted by laserlight

Basically, change this:

Code:

VolumeCube (int length, int width, int height)
{

to:

Code:

int VolumeCube (int length, int width, int height)
{

Ah, I see. That was a stupid question. Just making sure i understand this, just a typo in this book i guess. Again, thanks for everyone's help.