C++动态数组分配

动态一维数组：
#include<iostream>
using namespace std;
int main()
{
     int len;
     cin>>len;
     int *p=new int[len];
     delete[] p;
     p = NULL;
     return 0;
}
动态二维数组：
int main()
{
     int row, col;
     cout << "Please enter the number for row and column: " << endl;
     cin >> row >>col;

     //为二维数组开辟空间
     int **p = new int*[row];
     for (int i = 0;  i < row;  i++)
    {
          p[i] = new int[col];
    }

     for (int j = 0;j < row; j++)
     {
          for (int k = 0; k < col; k++)
          {
               p[j][k] = (j + 1) * (k + 1);
               cout << p[j][k] << &p[j][k];
          }
          cout<<endl;
     }

     //释放二维数组占用的空间
     for (int m = 0; m < row; m++)
    {
          delete[] p[m];
    }
    delete[] p;
    p = NULL;
    return 0;
}