## Understanding the Address OperatorIn computer programming, particularly in languages like C and C++, the address operator is a fundamental concept.### Question: The address operator- ○ is a variable that holds an address- ● all of these- ○ returns the memory address of a variable- ○ dereferences a pointer and allows access to the value of the variable the pointer points toThe address operator, represented by the ampersand (&), is used to obtain the memory address of a variable. Here’s a breakdown of its roles:1. A variable that holds an address: Often referred to as a pointer, it stores the memory address of another variable.2. Returns the memory address of a variable: By using the & operator before a variable, you can get its memory address.3. Dereferences a pointer: By pointing to the memory address, we can access the value stored at that address.In the provided question, the correct answer marked with a filled-in circle (●) is "all of these," signifying that all the statements provided are accurate descriptions of the roles of the address operator.

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The address operator O is a variable that holds an address all of these O returns the memory address of a variable dereferences a pointer and allows access to the value of the variable the pointer points to

The address operator O is a variable that holds an address all of these O returns the memory address of a variable dereferences a pointer and allows access to the value of the variable the pointer points to

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Concept of Pointer Parameter

Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.

Question

## Understanding the Address Operator

In computer programming, particularly in languages like C and C++, the address operator is a fundamental concept.

### Question: The address operator
- ○ is a variable that holds an address
- ● all of these
- ○ returns the memory address of a variable
- ○ dereferences a pointer and allows access to the value of the variable the pointer points to

The address operator, represented by the ampersand (&), is used to obtain the memory address of a variable. Here’s a breakdown of its roles:

1. A variable that holds an address: Often referred to as a pointer, it stores the memory address of another variable.
2. Returns the memory address of a variable: By using the & operator before a variable, you can get its memory address.
3. Dereferences a pointer: By pointing to the memory address, we can access the value stored at that address.

In the provided question, the correct answer marked with a filled-in circle (●) is "all of these," signifying that all the statements provided are accurate descriptions of the roles of the address operator.

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