The members of a structure variable can be referenced using ........... operator.

Question

Accepted Answer

The correct option is (1):
The **dot operator (.)** is the fundamental member access operator in C and C++ when dealing directly with a structure or class variable. When you have an instance (a variable) of a structure, you use the dot operator to link the structure variable's name to the specific member you wish to access or modify. For example, if you have a structure variable named `student` with a member named `roll_number`, you would write `student.roll_number` to reference that member. This operator provides direct access to the component fields of the composite data type, making it essential for reading from or writing to the individual members of the structure variable.

The incorrect option is (2):
The **asterisk operator (\*)** has several roles, but its most relevant role here is the *dereference* operator, which is used to access the value stored at a memory address held by a pointer. While it is used in structure access (e.g., `(*struct_ptr).member`), it is used with a *pointer* to a structure, not the structure *variable* itself as requested in the question. Furthermore, the combination `(*struct_ptr).member` is almost always replaced by the cleaner *arrow operator* (`->`) for convenience when using structure pointers.

The incorrect option is (3):
The **slash operator (/)** is the arithmetic division operator in C and C++. Its sole purpose is to perform division between two numeric operands. It is not designed for and cannot be used to reference or access the individual fields or members contained within a user-defined data type like a structure. Attempting to use the division operator for member access would result in a compilation error because it violates the language's syntactical rules for structures.

The incorrect option is (4):
The **hash symbol (\#)** is exclusively used in C and C++ to denote *preprocessor directives*, such as `#include`, `#define`, and `#ifdef`. These are instructions that are handled by the preprocessor before the code is compiled, performing tasks like file inclusion or macro substitution. The hash symbol is not considered a runtime operator, nor does it have any function related to accessing the internal members of a structure variable after the code has been compiled.