Module 2 : Functions in C
Learning Objectives:
- Understand the concept and importance of functions in C programming
- Declare and define functions with proper syntax
- Use function parameters and return values effectively
- Apply different parameter passing mechanisms (pass by value)
- Understand variable scope and lifetime concepts
- Implement recursive functions
- Use standard library functions effectively
- Migrate from Python functions to C functions
- Debug common function-related errors
1. Introduction to Functions
1.1 What are Functions? Functions are self-contained blocks of code that perform specific tasks. ...
2. Function Declaration, Definition, and Calling
2.1 Function Anatomy A C function consists of several parts: return_type function_name(parameter_...
3. Parameters and Arguments
3.1 Terminology Parameters (Formal Parameters): Variables in the function definition Arguments (...
4. Return Statement
4.1 Basic Return Usage The return statement serves two purposes: Return control to the calling f...
5. Variable Scope and Lifetime
5.1 Local Variables Variables declared inside a function are local to that function: Scope: Only...
6. Bonus: Some C Library Functions
Throughout this module, we've focused on defining our own functions. However, C also provides a r...
7. Recursion
7.1 Understanding Recursion Recursion is a programming technique where a function calls itself. E...
8. Function Examples and Applications
8.1 Menu-Driven Program #include <stdio.h> // Function prototypes void display_menu(void); int g...
9. Common Errors and Debugging
9.1 Function Declaration Errors Error 1: Missing Function Prototype // ERROR: Function used befor...