Answered: Explain an example in which variable…

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

Explain an example in which variable has two different addresses at different places in a program?

Expert Solution

Step 1

variable has two different addresses at different places in a program - this fact will be possible if we use the concept of pointer.

Check the code and output to understand more:

Code:

#include<stdio.h>
int main(){
int a=2,b=3;
//for showing the different addresses, we are going to use pointer
int *ptr;
// assigning address of a into ptr and printing it
ptr = &a;
printf("%x\n",ptr);
// assigning address of b into ptr and printing it
ptr = &b;
printf("%x\n",ptr);
}

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