was a variable. In addition, the index of the array can be an expression. int a[6] = {4, 8, 15, 16, 23, 42}; int j = a[0]; // j is 4 * int *p = &a[j - 1]; // p points at a[3] *a[2] = a[a[0]]; * ++a[1]; // a[2] is now 23 // a[1] is now 9
was a variable. In addition, the index of the array can be an expression. int a[6] = {4, 8, 15, 16, 23, 42}; int j = a[0]; // j is 4 * int *p = &a[j - 1]; // p points at a[3] *a[2] = a[a[0]]; * ++a[1]; // a[2] is now 23 // a[1] is now 9
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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May you please explain each line I starred and why they have these output values. Thank you!
![example: accessing array elements
Each individual array element can be used in an expression as if it
was a variable.
In addition, the index of the array can be an expression.
int a[6] = {4, 8, 15, 16, 23, 42};
int j = a[0];
// j is 4
* int *p = &a[j - 1];
// p points at a[3]
*a[2] = a[a[0]];
* ++a[1];
// a[2] is now 23
// a[1] is now 9](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F14bb29d5-3c37-4885-9c88-f4870b6f7d8f%2Feae6618a-849f-44ca-acee-cdb54c852299%2Fdnv40cv_processed.png&w=3840&q=75)
Transcribed Image Text:example: accessing array elements
Each individual array element can be used in an expression as if it
was a variable.
In addition, the index of the array can be an expression.
int a[6] = {4, 8, 15, 16, 23, 42};
int j = a[0];
// j is 4
* int *p = &a[j - 1];
// p points at a[3]
*a[2] = a[a[0]];
* ++a[1];
// a[2] is now 23
// a[1] is now 9
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