Defining and Calling Functions
Write functions with parameters and return values, and understand the importance of modular programming
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Defining and Calling Functions
Functions allow us to break a program into smaller, reusable parts.
In this lesson, you will learn how to:
- Define and call functions.
- Use function parameters and return values.
- Write modular and efficient code.

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What is a Function?
A function is a block of code that performs a specific task.
Functions improve code readability, reusability, and organization.
Example syntax:
returnType functionName(parameters) {
// Function body
}All lessons in this course
- Defining and Calling Functions
- Function Prototypes and Scope
- Recursion in C