#include 
        
         #include 
         
          #include 
          
           using namespace std;const int NN = 5;class Piece{    private:        int r;        int c;        int** p;    public:        Piece()                : r(0), c(0)        {            p = nullptr;        }        Piece(int r, int c, int (*pp)[NN])        {            this->r = r;            this->c = c;            this->p = new int*[r];            for(int i = 0; i < r; i++)            {                this->p[i] = new int[c];                memcpy(this->p[i], pp[i], c * sizeof(int));            }        }        ~Piece()        {            cout<<"delete"<
           
            p;        }        int getR()        {            return this->r;        }        int getC()        {            return this->c;        }        int ** getP()        {            return this->p;        }};int N;int r, c;int m[10][10];Piece piece[NN];int pi = 0;void dump(){    for(int i = 0; i < pi; i++)    {        for(int j = 0; j < piece[i].getR(); j++)        {            for(int k = 0; k < piece[i].getC(); k++)            {                cout << piece[i].getP()[j][k];            }            cout << endl;        }        cout << endl;    }}int main(){    freopen("d://1.text", "r", stdin);    while (cin >> N && N)    {        memset(m, 0, sizeof(m));        memset(piece, 0, sizeof(piece));        int p[NN][NN];        pi = 0;        for(int i = 1; i <= N; i++)        {            scanf("%d %d", &r, &c);            for(int j = 0; j < r; j++)                for(int k = 0; k < c; k++)                {                    char t;                    cin >> t;                    if(t == '0')                        p[j][k] = 0;                    else                        p[j][k] = i;                }            Piece pp(r, c, p);            piece[pi++] = pp;            cout<<"for end"<
           
          
         
        

输出

for end  //循环结束输出

delete   //删除pp对象

main end //main函数结束

//下面是5个delete 和 const int NN=5对应

delete 

delete

delete

delete

delete

//所以, delete 0 永远都是安全的

//注意前面有个  

memset(piece, 0, sizeof(piece));