生成动态二维数组

 1 #include<iostream>
 2 using namespace std;
 3 void make2DArray(int **&x, int rows, int cols)
 4 {
 5     x = new int*[rows];
 6     for(int i = 0; i < rows; i++)
 7         x[i] = new int[cols];
 8 }
 9 void delete2DArray(int **&x, int rows)
10 {
11     for(int i = 0; i < rows; i++)
12         delete []x[i];
13     delete []x;
14     x = 0;
15 }
16 int main()
17 {
18     int **x = NULL;
19     int rows, cols, num = 1;
20     cin >> rows >> cols;
21     make2DArray(x, rows, cols);
22     for(int i = 0; i < rows; i++)
23         for(int j = 0; j < cols; j++)
24             x[i][j] = num++;
25     for(int i = 0; i < rows; i++)
26     {
27         for(int j = 0; j < cols; j++)
28             cout << x[i][j] << " ";
29         cout << endl;
30     }
31     delete2DArray(x, rows);
32     return 0;
33 }