hi i'm an IT student taking an intro c++ class and my professor assigned this program for us to "Fix" but he didn't explain what any of the codes in them actually are... um... yeah. this might be the worst class i've ever taken. i've been studying the book 6 hours a night to try to teach myself... as a last ditch effort before i have to drop the class i thought i'd come here for help.

can ANYONE, ANYONE help me with this program? can you fix it for me so i can just see how it's supposed to be done? thanks for any help at all.

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Implementation of complx class


Problem Statement

In this exercise, you will define a complex data type complx, to manipulate complex numbers: a+bi. In complx class where you can declare complex data, input/output complex data and check if two complex numbers equal each other or not using the same operators used for other built-in data types.
You need to partially implement a few functions (in bold) in class complx. This exercise is a supplement and preparation to the Assignment.


-----------------------------------------------------
Code:
// Complx.h
#include <iostream>
#include <fstream>
using namespace std;
class complx
{
      double real,
             imag;
public:
      complx( double real = 0., double imag = 0.); // constructor
      ~complx();                      // destrcutor
      friend int operator== (const complx&, const complx&);
 
       //Sets private data members.
 
     void Set(double new_real, double new_imaginary) {
     real = new_real;
     imag = new_imaginary;
     }
 
     //Returns the real part of the complex number.
          double Real() {
          return real;
     }
 
     //Returns the imaginary part of the complex number.
     double Imaginary() {
     return imag;
     }
};
 
extern ifstream &operator >> ( ifstream &in_file, complx &number );
extern istream &operator >> ( istream &in_file, complx &number );
extern ostream &operator << ( ostream &out_file, complx &number );

--------------------------------------------------------


The following code implements two functions in the class. You need to implement the rest of the operators (in …).

--------------------------------------------------------
Code:
// Complx.cpp
#include "complx.h"
complx::~complx() {
…
}
ostream &operator<< ( ostream &out_file, complx &number )
{
…
}
 
 
extern ifstream &operator >> ( ifstream &in_file, complx &number )
{
     double re, is;
     char ch;
     if (in_file >> ch && ch == '('&& in_file >> re >> ch && ch == ','
          && in_file >> is >> ch && ch == ')')
              number.Set(re,is);
     else cerr << "Finish the input"<<endl;
     return in_file;
}
 
extern istream &operator >> ( istream &in_file, complx &number )
{
…
}
 
// define constructor
complx::complx( double r, double i )
{
      real = r; imag = i;
}
 
int operator== (const complx& a, const complx& b){
 
…
 
}





-------------------------------------

Submission

1. Run the following main program using the input sequence

(2,3) (6,7) (6,7) (4,5) (2,3)


----------------------------------------------
Code:
//call_complx.cpp
#include "complx.h"
int main()
{
        int i=0;
          complx c1, c2(3,5),in[5];
          cout<< "Please input a complex number in the format of (a,b) - " << endl;
         while ((cin  >> in[i])&& (i<4)){
              cout << in[i] << endl;
              i++;
        }      
        if (c1 == in[0] )        
          cout << c1 << " equals to " << in[0] << endl;
        else
           cout << c1 << " not equal to " << in[0]<< endl;
 
        if (in[1] == in[2] )          
          cout << in[1] << " equals to " << in[2] << endl;
        else
           cout << in[1] << " not equal to " << in[2]<< endl;        
       
        char c; cin >> c;
          return 0;   //successful termination
}
----------------------------------------------


Okay seriously, can anyone help? I've never had problems with any other programming classes and have a 4.0 in college so far. He's just NOT teaching.

Last edited by shabbir; 17Oct2009 at 18:50.. Reason: Code blocks