he following program with struct student, which has name and age. There is a pointer to struct student *ptr, but does not assign a value to it. Then, there is a print statement for ptr->age. 1. Why does an error occur when the program is run?

he following program with struct student, which has name and age. There is a pointer to struct student *ptr, but does not assign a value to it. Then, there is a print statement for ptr->age. 1. Why does an error occur when the program is run?

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter8: Advanced Method Concepts

Section: Chapter Questions

Problem 8RQ

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Concept explainers

Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.

Question

In the following program with struct student, which has name and age.

There is a pointer to struct student *ptr, but does not assign a value to it.

Then, there is a print statement for ptr->age.

1. Why does an error occur when the program is run?

#include <stdio.h>

//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;

}

Process by which instructions are given to a computer, software program, or application using code.

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