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Chapter 5: Problem 19

Give one good reason that you should not use global variables in a program.

Short Answer

Expert verified
Answer: One solid reason to avoid using global variables is that they can cause potential conflicts, such as conflicting variable names and unintended changes to the variable throughout the program. This can lead to bugs and unexpected behavior in the code.

Step by step solution

01

Reason: Potential Conflicts

When you use global variables, it increases the risk of conflicting variable names or unintended changes to the variable throughout your program. Since global variables are accessible across the entire program, it becomes more difficult to track where a variable might have been modified, leading to bugs and unexpected behavior in the code. Avoiding global variables promotes the use of localized variables and function arguments, making it easier to understand and maintain the code.

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