【资料备份】c++声明二维变长数组，并用memset赋予0值

示例代码

#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;
    
    
}