Function main

week05/examples/pointer.cpp:5–21

using namespace std;

int main()
{
    int num = 10;
    int * p1 = NULL, * p2 = NULL; // declaration, initialize to 0
    p1 = # // take the address of num, assign to p1
    p2 = # // take the address of num, assign to p2

    cout << "num = " << num << endl;

    *p1 = 20; // assign to num
    cout << "num = " << num << endl;

    *p2 = 30; // assign to num
    cout << "num = " << num << endl;

    return 0;
}