Question

Look at the following statement:

nt *ptr = nullptr;

In this statement, what does the word int mean?
A) The variable named *ptr will store an integer value.
B) The variable named *ptr will store an asterisk and an integer value.
C) ptr is a pointer variable that will store the address of an integer variable.
D) All of these
E) None of these

Answer 1

The word int mean C) ptr is a pointer variable that will store the address of an integer variable. (option C)

Step-by-step explanation:

In the given statement int *ptr = nullptr;, the word int indicates that ptr is a pointer variable that will store the address of an integer variable. This is a common C++ syntax where int specifies the type of the variable that the pointer is expected to point to.

The statement is declaring a pointer named ptr of type int*, which means it is designed to hold the memory address of an integer variable. The nullptr is assigned to initialize the pointer to a null value, indicating that it is currently not pointing to any specific memory location.

Understanding pointer declarations is crucial in C++ programming, as it dictates the type of data the pointer can point to. In this case, int *ptr signifies a pointer that is intended to hold the address of an integer variable.

Understanding and correctly using pointers are fundamental skills in C++ programming, allowing for dynamic memory allocation and manipulation of data structures. In this specific case, the pointer ptr is configured to work with integer data, and the use of nullptr ensures it starts with a null or empty value.(option C)