Question

Which of the following shows how to correctly declare pointer variable x?
A. int x;
B. int &x;
C. ptr x;
D. int *x;

Answer 1

Answer:

declaration of pointer variables are done using *

Explanation:

* denotes the declared variable is a pointer which can hold address of another location. To get values of any address & is used. For example, we have an integer variable a to which holds a value 10. if you want to read the address of the variable a, use &a. To store this address in any other memory declare a pointer variable.

int a = 10;

int *loc_a;

loc_a = &a;