Operator Overloading Error

[Hypnotik]

I am receiving a strange error, one I have never seen before.

error LNK2019: unresolved external symbol "public: __thiscall Complex::~Complex(void)" (??1Complex@@QAE@XZ) referenced in function _main

I also receive a fatal error:

fatal error LNK1120: 1 unresolved externals

If I do: #include "Complex.h" that takes care of the top error, however I still receive the fatal error.

I'm not sure what could be causing these. Any ideas??

 
#include<iostream>
using namespace std;
//#include "Complex.h"
class Complex
{
public:
    Complex(double =0.0, double= 0.0);
    ~Complex();
    Complex operator+(Complex &);
    Complex operator*(Complex &);
    void print ();
private:
    double real;
    double imaginary;
};
Complex::Complex(double r_port, double i_port):real(r_port),imaginary(i_port)
{
 
}
Complex Complex::operator+(Complex &operand2)
{
    return (Complex(real+operand2.real,imaginary+operand2.imaginary));
}
Complex Complex::operator*(Complex &operand2)
{
    return (Complex(real*operand2.real,imaginary*operand2.imaginary));
}
void Complex::print()
{
    cout<<'('<<real<<','<<imaginary<<')';
}
void main ()
{
    double real1,imag1,real2,imag2;
    cout<<"Enter your first real number: "<<endl;
    cin>>real1;
    cout<<"Enter your first imaginary number: "<<endl;
    cin>>imag1;
    cout<<"Enter your second real number: "<<endl;
    cin>>real2;
    cout<<"Enter your second imaginary number: "<<endl;
    cin>>imag2;
//    Complex x;
    Complex x(real1,imag1);
    Complex y(real2,imag2);
    cout<<"x: ";
    x.print();
    cout<<endl<<"y: ";
    y.print();
//    cout<<endl<<"z: ";
//    z.print();
}
 
 

Thanks,
J

[JosAH]

As far as I can see you forgot to define your ~Complex() dtor but you did declare
it; you must define it then.

kind regards,

Jos

[Hypnotik]

As far as I can see you forgot to define your ~Complex() dtor but you did declare
it; you must define it then.

kind regards,

Jos

Awesome Jos. I am looking at my past programs and in the book, and nowhere did I (or the author) define their destructor. That did it though.


Thanks,

J

[Hypnotik]

Found the problem....program is working.


Thanks to those who took a look and offered advice.

J

[Darryl]

Awesome Jos. I am looking at my past programs and in the book, and nowhere did I (or the author) define their destructor. That did it though.


Thanks,

J

You didn't define it BUT you did declare it. If you don't declare it, one will be created for you automatically, but since you declared one, you must define it also.

[Hypnotik]

You didn't define it BUT you did declare it. If you don't declare it, one will be created for you automatically, but since you declared one, you must define it also.

Cool. Like I said, I've never had to define one in any of the other programs I've wiritten.

Thanks for taking a look Darryl.


J

[Hypnotik]

The overloading problem has been solved. I missed in the assignment the part around using set and get functions. The set function is where I would actually enter the numbers from the user? And the get function would.....send those values to the print function??

I get confused about the set and get functions.

J

[Darryl]

Cool. Like I said, I've never had to define one in any of the other programs I've wiritten.

Thanks for taking a look Darryl.


J

I'll bet you did...You can't show me 1 piece of code that declares a destructor and didn't define it also and still compiles. Maybe you defined it inline and didn't realize it like:

class foo
{
public:
    // ~foo();  - not defined
     ~foo(){}  // ok
};
 

The braces there defines it.

[kapilghai2009]

hi dear
u forget to defined ur ~complex(); detroyed function/

[Hypnotik]

You're right Daryl, that is how I defined the destructor.

My next question is, I need to implement set and get functions. I missed that little line in the problem. Does the set function just initialize the 2 sets to 0,0 and the get function take in the info of the 2 sets? The set and get functions still confuse me for some reason.


J

[Hypnotik]

Problem solved.


Thanks,
J