need someone to check my coding

hi.
i am doing a question from the book on c++ and would like all of you to check the errors..
this is about adding complex numbers

but i am getting many errors can some check what's wrong

Code:

---

#include<iostream>
using namespace std;

class complexNumber
{

private:

float realPart;
float imgPart;
static int count;

public:
complexNumber ( float real=0,float img=0);
void show();

static int getcount() { return count;};
void incr();

friend int add( complexNumber, complexNumber):complexNumber
};

complexNumber :: complexNumber( float real , float img)
{

realPart = real;
realPart = real;

count ++;
}
void complexNumber :: show()
{
         
cout<< realPart<< "+"<< imgPart<<"i"<<endl;

}

int add( complexNumber &a, complexNumber &b): complexNumber &c
{
c.realPart = a.realPart + b.realPart;
c.imgPart = a.realPart + b.realPart;
return c;
}
 void complexNumber :: incr()
{
complexNumber a;
a.realPart++;
return 0;

}

int main()

{

  complexNumber a(2.0, 1.0);       
  a.incr();
  a.show();

 return 0; 
}

---

i can't get it actually how to define <<friend>> add( complexNumber , complexNumber) :
complexNumber
and my incr() function is wrong..it is a member method that increments the complex object by 1 and effect the real part and return nothing

what error is your compiler reporting? and indent your code, or noone is likely to bother reading it.

Looks like there's lots of crazy stuff going on.
1.) incr() is declared as void yet returns a zero?
2.) add() is declared as returning an INT yet really returns a complexNumber
3.) Reread about using static variables

Try this:

Code:

---

#include<iostream>
using namespace std;

class complexNumber
{

      private:
                float realPart;
                float imgPart;
                static int count;

      public:
      complexNumber ( float real=0,float img=0);
     
      void show();

      int getcount();
      int incr();
      friend complexNumber add(complexNumber, complexNumber);
   
};

int complexNumber::count=0;

int complexNumber::getcount()
{
    return complexNumber::count;
}

complexNumber::complexNumber(float real, float img)
{
              realPart = real;
              imgPart = img;

              count++;
}

complexNumber add(complexNumber a, complexNumber b)
{
              complexNumber c;
              c.realPart=a.realPart+b.realPart;
              c.imgPart=a.imgPart+b.imgPart;
              return c;
}

void complexNumber :: show()
{
          cout<< realPart<< "+"<< imgPart<<"i"<<endl;
}

int complexNumber :: incr()
{
    complexNumber a;
    a.realPart++;
    return 0;
}

int main()
{

    complexNumber a(2.0, 1.0);       
    a.incr();
    a.show();

    return 0; 
}

---

I still don't think this is really going to do everything you think it is, your incr() for example, but this might get you going.