Data Structure Lab 1

What is the index of the first element in a C++ array?

If an array int arr[5]; is declared, what is the valid index range?

What is the output of the following code?
int num = 5, *ptr = #

ptr = ptr + 10;

cout << num;

Which of the following correctly declares a pointer to an integer?

Consider the code:
int arr[3] = {1, 2, 3};

int *p = arr;

cout << *(p+2);

After executing the code below, what are the values of x and y?
int x = 5, y = 10;

int p = &x, q = &y;

p = q;

What will the following code output?
char ch = 'A'; // ASCII = 65

ch = ch + 2;

cout << ch;

What is the output of this program?
int arr[4] = {2, 4, 6, 8};

int *ptr = arr;

cout << ptr << " " << (ptr+3);

What is the output?
int num = 100;

int *p = &num;

int **pp = &p;

cout << **pp;

What's the output of the following?
int arr[4] = {5, 10, 15, 20};

int *p = arr;

p += 2;

cout << *p;