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A. 0x2000 B. 0x2008 O C. 0x2010 D. 0x2018 O E. 0x2020 F. 0x2028 arte

A. 0x2000 B. 0x2008 O C. 0x2010 D. 0x2018 O E. 0x2020 F. 0x2028 arte

Database System Concepts
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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**Question:** What value is in `z` after the code above runs? **Options:** - A. 0x2000 - B. 0x2008 - C. 0x2010 - D. 0x2018 - E. 0x2020 - F. 0x2028 - G. 0x2030
Transcribed Image Text:**Question:** What value is in `z` after the code above runs? **Options:** - A. 0x2000 - B. 0x2008 - C. 0x2010 - D. 0x2018 - E. 0x2020 - F. 0x2028 - G. 0x2030
**Consider the following code:** ```c int x = 0x2020; int *y = &x; int **z = &y; *y += 8; int w = **z; ``` Suppose the compiler puts `x` at address `0x2000`, `y` at address `0x2008`, `z` at address `0x2010`, and `w` at address `0x2018`. Use this code to answer the next 4 questions. --- The code snippet exhibits the use of pointers and pointer manipulation in C programming. Here’s a brief explanation: - `x` is assigned the hexadecimal value `0x2020`. - `y` is a pointer that stores the address of `x`. - `z` is a pointer to a pointer, storing the address of `y`. - The line `*y += 8;` increments the value pointed to by `y` (i.e., `x`) by 8. - `w` stores the value pointed to by `z`, which is the same as `x` now increased by 8. The memory addresses shown are just hypothetical and help illustrate where each variable resides during execution.
Transcribed Image Text:**Consider the following code:** ```c int x = 0x2020; int *y = &x; int **z = &y; *y += 8; int w = **z; ``` Suppose the compiler puts `x` at address `0x2000`, `y` at address `0x2008`, `z` at address `0x2010`, and `w` at address `0x2018`. Use this code to answer the next 4 questions. --- The code snippet exhibits the use of pointers and pointer manipulation in C programming. Here’s a brief explanation: - `x` is assigned the hexadecimal value `0x2020`. - `y` is a pointer that stores the address of `x`. - `z` is a pointer to a pointer, storing the address of `y`. - The line `*y += 8;` increments the value pointed to by `y` (i.e., `x`) by 8. - `w` stores the value pointed to by `z`, which is the same as `x` now increased by 8. The memory addresses shown are just hypothetical and help illustrate where each variable resides during execution.
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