Display 9.7 CS311

#include <iostream>
using namespace std;
//Q1 - typedef defines IntArrayPointer as both a variable name and datatype
//Q2 - Line 12 m begins as a one dimensional then becomes a two dimensional after
//Q3 - Line 15 adding a "new" is to make m a dynamically allocated [2D] now
typedef int* IntArrayPtr;

int main( )
{
int d1, d2;
cout << "Enter the row and column dimensions of the array:\n";
cin >> d1 >> d2;

IntArrayPtr *m = new IntArrayPtr[d1];
int i, j;
for (i = 0; i < d1; i++)
m[i] = new int[d2];
//m is now a d1 by d2 array.

cout << "Enter " << d1 << " rows of "
<< d2 << " integers each:\n";
for (i = 0; i < d1; i++)
for (j = 0; j < d2; j++)
cin >> m[i][j];

cout << "Echoing the two-dimensional array:\n";
for (i = 0; i < d1; i++)
{
for (j = 0; j < d2; j++)
cout << m[i][j] << " ";
cout << endl;
}
for (i = 0; i < d1; i++)
delete[] m[i];
delete[] m;

return 0;
}