Answered: Giventhe following C program that…

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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Giventhe following C program that contains struct student, that has name and age, and a pointer to struct student *ptr, but does not assign a value to it:

1. What gdb commands would you use to find the error it contains?

#include <stdio.h>

/*write program

Then, print ptr->age*/

//make struct student

struct student

{

charname[25];

int age;

};

int main()

{

//declare pointer to struct student

struct student *ptr;

//print ptr -> age

printf("%d", ptr->age);

return0;

}

Expert Solution

Step 1 Explanation

Dear Student,

First, you would need to compile the program with debugging symbols included. For gcc, this can be done with the -g flag. Then, you would run the program in gdb.

Once in gdb, you can use the break command to set a breakpoint at the line where the printf statement is. Then, you can use the run command to start execution of the program. When the program reaches the breakpoint, you can use the print command to print the value of ptr->age.

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