sanderjs@kalypso:~/Classes/csce_245/tmp$ cat test002.cpp
#include <iostream>

using namespace std;

int main(int argc, char** argv) {

    int *ptr = new int[10];

    cout << *(ptr-1) << endl;

    return 0;

}
sanderjs@kalypso:~/Classes/csce_245/tmp$ g++ test002.cpp
sanderjs@kalypso:~/Classes/csce_245/tmp$ ./a.out
49