c++ operator overloads matrix

ee293 (1)
I tried to do it using proxy class, but I need to solve the assignment without proxy.

Here is the code. I've been helped by some here but I'm pretty sure it is wrong.

This is the given "main.cpp".

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void main()
{
    Matrix theMat(4,2);
    theMat[1][1]=234;
    theMat[0][0]=234;
    cout << theMat;
    const Matrix s =-theMat;
    cout << theMat << endl << s << endl;
    theMat = s + 12 * -theMat * theMat * 25 - s;
}



This is the Matrix.h.

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#ifndef MATRIX_H
#define MATRIX_H

class Matrix
{
public :
    Matrix(int ,int );
    friend ostream& operator<<(ostream& os, const Matrix& matrix); /// cant print all matrix values
    int const* operator[]( int const y ) const;
    int* operator[]( int const y );

private : 
    int numOfRows;
    int numOfCols;
    int **matrix;  
};

#endif



Matrix.cpp
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#include <iostream>
#include "Matrix.h"
using namespace std;

Matrix::Matrix(int rows,int cols)
    :numOfRows(rows),numOfCols(cols)
{
    matrix=new int *[cols];
    for(int i=0;i<rows;i++)
    {
        matrix[i]=new int [cols];
        for(int c=0;c<cols;c++)
        {
            matrix[i][c]=0;
        }
    }
}
ostream& operator<<(ostream& os, const Matrix& matrix) 
{ 
    return os; 
} 
int* Matrix:: operator[]( int const y );
{
    return &matrix[0][y];       
}
int Matrix::const* operator[]( int const y ) const;
{
    return &matrix[0][y];
}
Last edited on
LukeShen (20)
you can use std::vector<std::vector<int> > to replace int **, and you will have a synthesized operator= by compiler.
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