#include <iostream>

using namespace std;

int main()

{

#if 0

    //devide by 0

    int i = ;

    int j = ;

    double d = i/j;

#endif    

#if 1

    //allocate large memory, NOK

    char* pc = new char[];

#endif

#if 0

    //change const memory, OK

    char* pc1 = "stack";

    pc1[] = 'a';

    cout << pc1 << endl;

#endif

#if 0

    //access invalid address£¬ OK

    char pc3[] = {'a', 'b', 'c'};

    pc3[] = 'd';

    cout << pc3 << endl;

#endif

#if 0

    //stack overflow, NOK

    char pc4[];

    cout << "Please enter yoour name: " << endl;

    cin >> pc4; //enter AAAAAAAAAAAAAAAAAAAAAAA

    cout << "Your name is: " << pc4 << endl;

#endif

#if 0

    //delete pointer not from new, NOK

    int i;

    int* pi = &i;

    delete pi;

#endif

}