We consider ptr as a 2D matrix. Whereas, number of rows would be fixed but make number of columns variables. To do this, instead of using arrays of fixed column size allocated on stack, you will make...

We consider ptr as a 2D matrix. Whereas, number of rows would be fixed but
make number of columns variables. To do this, instead of using arrays of fixed column size
allocated on stack, you will make each element of array to have nColumns (passed as
argument to the function) elements and store them on heap using new operator.

You are not allowed to access the array using original variable name.