Thread: overload contructors || check bounds of array

i need to overload a constructor to specify dimensions in a 2-d array and check to see if its within the bounds of 10x10. and i keep getting errors on my attempt. for clarity ill just include the whole class.

Code:

class matrix
{

private:
        int lim1,lim2;
        int mtx[lim1][lim2];

public:
        matrix():       lim1(10),lim2(10)
        {       }
        matrix(int x,int y): lim1(x),lim2(y)    //RESTRICT defined as 10
        {
                if(x < RESTRICT-1 || y < RESTRICT-1)
                {
                        lim1 = x;
                        lim2 = y;
                }
                else
                        cout << "Error:  specified array too large." << endl;
        }
        void putel(int index1,int index2,int value)
        {
                if(index1 <= RESTRICT-1 && index2 <= RESTRICT-1)
                        mtx[index1][index2] = value;
                else
                        cout << "Error: exceeded limits of array" << endl;
        }

        int getel(int index1,int index2)
        {
                if(index1 <= RESTRICT-1 && index2 <= RESTRICT-1)
                {
                        int tmp = mtx[index1][index2];
                        return tmp;
                }
                else
                        cout << "Error: exceeded limits of array" << endl;
        }
};
//errors
ch7_ex10.cpp:11: error: invalid use of member `matrix::lim1'
ch7_ex10.cpp:11: error: invalid use of member `matrix::lim2'
ch7_ex10.cpp: In member function `void matrix::putel(int, int, int)':
ch7_ex10.cpp:29: error: `mtx' undeclared (first use this function)
ch7_ex10.cpp:29: error: (Each undeclared identifier is reported only once for 
   each function it appears in.)

cant figure out why it says invalid use of member...help much appreciated. thanks in advance

thanks. deleting lim1 and lim2 worked. before all this i tried setting lim1 = lim2 = 10. but somehow that didnt work. oh well..fixed now.
i hate arrays