Understanding how a buffer overflow occurs

In this recipe, we will learn to get input from the user and will see the situations that lead to a buffer overflow and result in ambiguous output. We will also learn the procedure to avoid a buffer overflow.

Basically, we will make a structure comprising two members and in one of the members, we will deliberately enter text that is larger than its capacity, as a result of which a buffer overflow will occur. This will lead to the overwriting of the content of another member of the structure.

How to do it...

Here are the steps to make a program that will lead to a buffer overflow:

1. Define a structure consisting of two members, name and orderid.
2. Define two variables of the structure...