How to get compiler to recognize previous declarations

[dtaqee88]

/**

How would you get a class higher in the program
to recognize another class that is lower in the
program....? For example, "other class" hasn't a
problem recognizing the "myFuncs" class. How would
I get that to work the other way around if the
compiler compiles downward? Thanks.

**/

#include <iostream>
#include <string>
#include <vector>
#include <iterator>
///Practice

class myFuncs
{
friend void printInteger(myFuncs cFuncs);///Play with this friend func
private:
    int number;

public:
    myFuncs(){number = 0;}
    void print()
    {
            std::cout<<"The number is "<<number<<std::endl<<std::endl;
    }
    void setNumberToWhateverIChoose(int num){number = num;}
};

class otherClass
{
public:
    void printInteger(myFuncs cFunc){cFunc.print();}
};

int main()
{
    std::vector<int> myVec;
    std::vector<int>::iterator myVecIterator;
    myFuncs cFunc;
    otherClass cOther;

    cFunc.setNumberToWhateverIChoose(19);
    cFunc.print();
    cOther.printInteger(cFunc);

    return 0;
}

[Smac89]

I think the word you are looking for is "forward declaration". This is where you make known a class to other objects before actually implementing the class

[dtaqee88]

I just looked up "forward declaration" and you're right. Thanks but it's not in my book anywhere. Would you happen to have a link explaining how to implement it. I looked here and got confused. Thanks

[LB]

http://www.cplusplus.com/articles/Gw6AC542/

[Smac89]

chief wrote:

Would you happen to have a link explaining how to implement it.

http://lmgtfy.com/?q=forward+declaration+c%2B%2B

[long double main]

In short,

class myFuncs; // Forward declaration

class otherClass
{
public:
    void printInteger(myFuncs cFunc); // Okay, compiler knows myFuncs exists
};

class myFuncs
{
    // ...
};

void otherClass::printInteger(myFuncs cFunc)
{
    cFunc.print(); // Okay, compiler knows the full definition of myFuncs now
}

[dtaqee88]

Sorry for the late, late reply but thanks a lot. Definitely helped.

@LB That article was too much but very informative. Need to study a little. Thanks a bunch. Opened my eyes to swerve a lot of future headaches.