Function Example Two: Arduino Course 8.2

In this lesson, the instructor recaps the previous session on Arduino programming, focusing on reading temperature from an LM34 sensor and converting it to Fahrenheit. The lesson then delves into variable scope, explaining the difference between global and local variables. It highlights the importance of function prototypes, even though the Arduino IDE handles them automatically. The session concludes with a practical example of refactoring code by creating a function for serial printing, demonstrating the benefits of modular code.

What is the purpose of variable scope within a function?

Explain the concept of global variables and their potential risks.

How can you protect a global variable from being altered by other functions?

Describe the scope of a variable defined inside a user-defined function.

What is a function prototype and why is it important?

How does the Arduino IDE handle function prototypes automatically?

What happens if you try to use a variable before it has been declared?

What is the significance of using comments before a function definition?

What are the advantages of using user-defined functions in Arduino programming?

Why is it beneficial to create functions for repetitive tasks in programming?