Understanding how a vulnerability occurs while copying strings

In this recipe, we will see the vulnerability that might occur while copying a string. We will also see how to avoid that vulnerability. We will first define a structure consisting of two members. In one of the members, we will be copying a text that is larger than its capacity, which will result in overwriting the content of another member.

In the next recipe, we will learn how to avoid this problem.

How to do it...

Here are the steps to understand how a vulnerability occurs while copying a string:

1. Define a structure consisting of two members, name and orderid.
2. Define a variable of the structure type defined in step 1.
3. Assign any integer value to the orderid...