【资料备份】c++声明二维变长数组，并用memset赋予0值

#include "stdafx.h"

#include <iostream>
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
    string s1="123456";
    string s2="abc";

    int **count=new int*[s2.size()];
    for (int i=0;i<s2.size();i++)
    {
        count[i]=new int[s1.size()];
        memset(count[i],0,sizeof(int)*s1.size());
    }
    
    for (int i=0;i<s2.size();i++)
    {
        for (int j=0;j<s1.size();j++)
        {
            cout<<count[i][j]<<endl;
        }
    }
    for (int i=0;i<s2.size();i++)
    {
        delete[]count[i];
    }
    delete []count;
    cout<<"finish"<<endl;
    int end;
    cin>>end;
    
    
}