New2DArray动态二维数组

// New2DArray.cpp : Defines the entry point for the console application.//#include "stdafx.h"//int *arr; //it can be any other type (char, float) //arr = new int[n]; //n should be integer variable #include <iostream.h>void main(){int **arr; int N,M; cout<<"请输入行数、列数:";cin >> N >> M; arr = new int*[N]; for(int i=0;i<N;i++){   arr[i] = new int[M]; } for(i=0;i<N;i++){   for(int j=0;j<M;j++)   {    arr[i][j]=10*i+j;    //cout<<arr[i][j]<<" ";   }   //cout<<endl;}for(i=0;i<N;i++){   for(int j=0;j<M;j++)   {    //arr[i][j]=2;    cout<<arr[i][j]<<" ";   }   cout<<endl;}cout<<endl;}