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#include <iostream>
using namespace std;
 
class Generator {
public:
    virtual float getSample(int sample)=0;
};
 
class Note {
public:
 
    Generator *generator; // THIS IS WHAT IS CAUSING ME TROUBLE
    Note(Generator *aGen){
        generator = aGen;
    }
};
 
class Synth  : public Generator{
public:
    virtual float getSample(int sample);
    int varA;
	int varB;
	Synth(){
		varA = 5;
		varB = 8;
	}
};
 
 
float Synth::getSample(int sample){
    varA = sample;
	varB = 3;
 
	return 0;
}
 
class Track {
public:
    Generator *generator;
	Track(){
		generator = new Synth();
	}
};
 
int main() {
    cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
	Track track = Track();
    Note n = Note(&track.generator);
	cout << "test" << endl;
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:48:35: error: no matching function for call to ‘Note::Note(Generator**)’
prog.cpp:48:35: note: candidates are:
prog.cpp:13:5: note: Note::Note(Generator*)
prog.cpp:13:5: note:   no known conversion for argument 1 from ‘Generator**’ to ‘Generator*’
prog.cpp:9:7: note: Note::Note(const Note&)
prog.cpp:9:7: note:   no known conversion for argument 1 from ‘Generator**’ to ‘const Note&’
prog.cpp:48:10: warning: unused variable ‘n’ [-Wunused-variable]

Standard output is empty