c++ 利用new动态的定义二维数组

#include <iostream>
using namespace std;
 
int main()
{
    int row = , col = ;
    // key code: 申请空间
    int **edge = (int **) new int *[row];
    for (int i = ; i < row; i++)
    {
        edge[i] = new int[col];
    }
 
    for (int i = ; i < row; i++)
    {
        cout << endl;
        for (int j = ; j < col; j++)
        {
            edge[i][j] = rand()%;
            cout << edge[i][j] << " ";
        }
    }
 
    return ;
 
}