Re: Dev C++

From:
=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?= <Erik-wikstrom@telia.com>
Newsgroups:
comp.lang.c++
Date:
Sun, 20 Apr 2008 18:28:16 GMT
Message-ID:
<4XLOj.6340$R_4.5128@newsb.telia.net>
On 2008-04-20 19:59, Sam wrote:

Crazy c writes:

I have hit an error that I do not understand. That is one thing about
Dev that I do not like, I cannot understand the errors. There should
be a course in Dev errors. It is pretty straightforward; I am checking
that the real and imginary parts of a Complex Number are not equal to
0 (division). In (a,b)/(c,d), if c && d = 0; I want to display an
error message and return to the program.

ComplexNumber &ComplexNumber :: operator/ (const ComplexNumber & c1)
{
              //check for c & d = 0
              if (c1.getReal()== 0 && c1.getImag()== 0) {
                  cout << "The Complex Number used for your
denominator cannot contain 0 for the real AND
the imaginary part" << endl;
                  return 1;// this generates the error
                  }

              ComplexNumber complxSum;
              double s;
              //for s
              s = ((this -> getImag() * this -> getImag()) +
(c1.getImag() * c1.getImag()));
              //divide
              complxSum.setReal ( ((c1.getReal() * this -> getReal())
+ (c1.getImag() * this -> getImag())) /s);
              complxSum.setImag ( ((c1.getReal() * this -> getImag())
- (c1.getImag() * this -> getReal())) /s);

              return complxSum;
}//end operator/

w>

//error from Dev
102 C:\Documents and Settings\cbrown\My Documents\DSCmplxNum
\ComplexNumber.cpp invalid initialization of non-const reference of
type 'ComplexNumber&' from a temporary of type 'int'

Any ideas as to why the return does not work or what the error
designates?


Your function returns a reference to an object. Instead of returning a
reference to an object, your code tries to return an int value. The compiler
is telling you that this is not a valid type conversion.

If your ComplexNumber object has a constructor that takes an int parameter,
just change the function to return a ComplexNumber object, rather than a
reference to a ComplexNumber object.


A constructor have no return-type, so you can't change it.

--
Erik Wikstr??m

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