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Issues with coding and compiling class

ocdjg (34)
Hi guys. OK I got another class that is giving me issues. This class has more than one constructor and I think that is what is throwing me off. Here is the coding for the class...

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//Filter.h
#ifndef filter_H
#define filter_H
#include <string>
using namespace std;

class Filter //Names the class "Resistor".
{ 
private:
	FiltRes:Resistor
	FiltCap:Capacitor
	double CutOffFrequency; 
	double minCutOffFrequency;
	double maxCutOffFrequency;
	double filterTol;
	string filterType;

public: //Getter and setter functions.
	Filter(Resistor initialR, Capacitor initialC); //constructor 1
	Filter(double initialNominalR, double initialToleranceR, 
           double initialNominalC,  double initialToleranceC); //constructor 2
	Filter();//constructor 3
	void setR(double a); 
	void setC(double b); 
	double getR(void); 
	double getRT(void);
	double getC(void);
	double getCTvoid);
	double getCutOffFrequency(void);
};
#endif


And the cpp file...

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//Filter.h
#ifndef filter_H
#define filter_H
#include <string>
using namespace std;

class Filter //Names the class "Resistor".
{ 
private:
	FiltRes:Resistor
	FiltCap:Capacitor
	double CutOffFrequency; 
	double minCutOffFrequency;
	double maxCutOffFrequency;
	double filterTol;
	string filterType;

public: //Getter and setter functions.
	Filter(Resistor initialR, Capacitor initialC); //constructor 1
	Filter(double initialNominalR, double initialToleranceR, 
           double initialNominalC,  double initialToleranceC); //constructor 2
	Filter();//constructor 3
	void setR(double a); 
	void setC(double b); 
	double getR(void); 
	double getRT(void);
	double getC(void);
	double getCTvoid);
	double getCutOffFrequency(void);
};
#endif
ocdjg (34)
Here is the main program...

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#include <iostream>
#include <fstream>
#include <conio.h>
#include "Filter.h"
using namespace std;

int main (void)
{
	double resNom, resTol, capNom, capTol;
		cout << "Testing default constructor and all get methods" << endl
		 << "all values should be zero for filter f1:" << endl
		 << endl;
	Filter f1;
	cout << "R     = " << f1.getR( ) << endl
		 << "R tol = " << f1.getRTolerance( ) << endl
		 << "C     = " << f1.getC( ) << endl
		 << "C tol = " << f1.getCTolerance( ) << endl
		 << "fc    = " << f1.getCutOffFrequency( ) << endl << endl;

	cout << "Testing setR and setC methods with filter f1:" << endl
		 << "Expect these values:" << endl
		 << "R = 150" << endl
		 << "R tolerance = 20" << endl
		 << "C = 0.5" << endl
		 << "C tolerance = 30" << endl
		 << "fc = 2122.066" << endl << endl;
	f1.setR(150, 20);
	f1.setC(0.5, 30);
	cout << "R     = " << f1.getR( ) << endl
		 << "R tol = " << f1.getRTolerance( ) << endl
		 << "C     = " << f1.getC( ) << endl
		 << "C tol = " << f1.getCTolerance( ) << endl
		 << "fc    = " << f1.getCutOffFrequency( ) << endl << endl;
	
	//Save filter information to filter.txt in order. Filter.txt should be in the same dir as main.cpp
	ofstream outfile("filter.txt");
	outfile <<f1.getR()<<endl
		<<f1.getRTolerance()<<endl
		<<f1.getC()<<endl
		<<f1.getCTolerance()<<endl;
		cout << "File written." << endl;

	cout << "Testing parameterized constructor" << endl
		 << "Creating f2 with these values:" << endl
		 << "R = 27" << endl
		 << "R tolerance = 10" << endl
		 << "C = 0.03" << endl
		 << "C tolerance = 50" << endl
		 << "fc = 196487.584" << endl << endl;
	Resistor r1(27, 10, "r1");
	Capacitor c1(0.03, 50);
	Filter f2(r1, c1);
	cout << "R     = " << f2.getR( ) << endl
		 << "R tol = " << f2.getRTolerance( ) << endl
		 << "C     = " << f2.getC( ) << endl
		 << "C tol = " << f2.getCTolerance( ) << endl
		 << "fc    = " << f2.getCutOffFrequency( ) << endl << endl;

	cout <<"Testing file read into filter 2:"<<endl;
	ifstream infile("filter.txt");
	infile  >> resNom
			>> resTol
			>> capNom
			>> capTol;
	
	f2.setR(resNom, resTol);
	f2.setC(capNom, capTol);

		cout << "R     = " << f2.getR( ) << endl
		 << "R tol = " << f2.getRTolerance( ) << endl
		 << "C     = " << f2.getC( ) << endl
		 << "C tol = " << f2.getCTolerance( ) << endl
		 << "fc    = " << f2.getCutOffFrequency( ) << endl << endl;

	cout << "Press ENTER key to exit" << flush;



	
	cin.ignore( );
	return 0;
}
Lowest0ne (1536)
Is your program compiling? I would imagine the error messages are telling you important things.

Try putting various "couts" in your class constructors, so you can see where things are. You can also overload the << operator to make life a little easier. 
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class Rectangle
{
  int x;
  int y;

public:
  Rectangle(int a, int b) : x(a), y(b) {}
  
  friend ostream& operator<<(ostream& out, const Rectangle& rect)
  {  return out << "Rect: ( " << rect.x << ", " << rect.y << " ), Area:" << rect.x * rect.y;   }
};

int main(void)
  Rectangle myRect(3,4);
  cout << myRect << endl;
  return 0;
}

Last edited on
ocdjg (34)
No its not compiling right now. I know my coding is off I'm just unsure how to fix it.
randisking (47)
Can you provide the error messages? And perhaps I missed something but did you actually write the class functions?
Last edited on
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