From: Mike Huang <monhuang AT yahoo DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: operator overloading error
Date: Sun, 10 Oct 1999 18:22:21 -0400
Organization: California Institute of Technology, Pasadena
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hello,
    I have the following .h file:

#ifndef _MTX_H
#define _MTX_H

#include <vector>

class matrix {
    public:
          int col, row;
     public:
    //2-D array, p836, Stroustrup, The C++ programming language, 3rd Ed.

    vector <vector <float> > M;
    matrix();
    matrix(int numrow, int numcol);
    ~matrix();
    matrix operator* (const matrix&, const matrix&);
};

#endif _MTX_H

but when I compile it with gcc -c mtx.cpp, DJGPP gave me:

mtx.h:18 'matrix::operator *(const matrix&, const matrix&)' must take
either zero or one argument)

I would like to code it so it will work like matrix1 = matrix2 *
matrix3.
What's wrong with my code?

Sincerely,

Mike H.