C++动态创建二维数组

输入n,m。创建一个n行m列的二维数组。

  int m, n; 
    cin >> n >> m;
    int** f = new int* [n];//n个指针的指针数组
    for (int i = 0; i < n; i++)
    {
        f[i] = new int[m];//指针数组的每个指针再指向m个元素的一维数组
    }

#include
using namespace std;
int main() {
    int m, n; 
    cin >> n >> m;
    int** f = new int* [n];
    for (int i = 0; i < n; i++)
    {
        f[i] = new int[m];
    }
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
        {
            cin >> f[i][j];
        }
   for (int i = 0; i < n; i++)
      {  for (int j = 0; j < m; j++)
        {
            cout<< f[i][j]<<" ";
        }
        cout<