Can seem to figure this out.

[GoPredsGo]

This is what I am trying to accomplish...You need to implement a recursive function namely Apowerfun. Apowerfun is a
power function which receives the value of a real number “a” raised to the
power of a non negative integer “n”.
Write a header file which that you will call Apower.h. The file contains a
recursive method Apowerfun that has two parameters:
1- First parameter is a of type float
2- Second parameter is n of type long
and returns the an
value as a float.
Write a C++ file which you will call Apower.cpp that reads in a long non
negative number n, and a float number a, and prints the corresponding a
number. And my code is below with the error(s)

here is the header file

  #ifndef APOWER_H  // Preprocessor
#define APOWER_H

#include <iostream>
#include <iomanip>

using namespace std;
 

class Apower
{
public:

    float apowerfun(float a, long n)
    {
        if (a==0)
        {
        return (0);
	    }

        if (n==0)
        {
        return (1);
        }
			else if (n > 0)
        {
        return (a * apowerfun(a,n-1));
    }

}

};
#endif 

And here is the .cpp file

#include <iostream>
#include <iomanip>

using namespace std;

#include "APower.h" //implementation of the employee class

void main()
{
    Apower ap1(float a, long n);

    float a;
    long n;

    cout << "Enter base as an integer: ";
    cin >> a;

 
    cout << "Enter exponent as an integer: ";
    cin >> n;

     
    Apower* apowerfun = new Apower(ap1(a,n)); 

     
    cout << "\nResult: " << apowerfun << endl;
    
	cin.get();
    cin.get();

};

Error:1>Apower.obj : error LNK2019: unresolved external symbol "class Apower __cdecl ap1(float,long)" (?ap1@@YA?AVApower@@MJ@Z) referenced in function _main
1>C:\Users\Friedmann\Desktop\Data Structures\Assignment 7\Apower\Debug\Apower.exe : fatal error LNK1120: 1 unresolved externals

This is the error I am getting, I just can not seem to solve this issue, I am kind of stuck and any help would be outstanding, thanks

[mobotus]

Line 10 you are trying to use an argumented constructor no such constructor exist. Your next error will be line 23 you are calling a function that doesn't exist.

Also line 26 you are not dereferencing your pointer and then you will run into the << operator has no idea what to do with an Apower object.

	float apowerfun(float a, long n)
	{
		if (a == 0)
		{
			return (0);
		}

		if (n == 0)
		{
			return (1);
		}
		else if (n > 0)
		{
			return (a * apowerfun(a, n - 1));
		}
		
	}

You are going to get a warning from this that not every path returns a value, might want to rethink your logic