Thread: dynamic 2d-array

Hi All,

While running the below code i am getting
Error like :-

In member function ‘void Matrix::get_element(int, int, int)’:
cons_2d_array.cpp:13:9: error: invalid types ‘int[int]’ for array subscript
cons_2d_array.cpp: In member function ‘int& Matrix: put_element(int, int)’:
cons_2d_array.cpp:16:23: error: invalid types ‘int[int]’ for array subscript
cons_2d_array.cpp: In constructor ‘Matrix::Matrix(int, int)’:
cons_2d_array.cpp:23:18: error: cannot convert ‘int**’ to ‘int*’ in assignment
cons_2d_array.cpp:25:28: error: invalid conversion from ‘int*’ to ‘int’ [-fpermissive]

Code:

class Matrix
{
        int *p;
        int d1,d2;
    public:
        Matrix()
        {d1=0;d2=0;}
        Matrix(int x,int y);


        void get_element(int i, int j, int value)
        {p[i][j]=value;}


        int & put_element(int i, int j)
        {return p[i][j];}
};


Matrix :: Matrix(const int x, const int y)
{
        d1=x;
        d2=y;
        p = new int *[d1];
        for(int i=0; i<d1; i++)
           p[i]= new int[d2];
}