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C Functions - The Factory

Build, call, and understand function execution flow

Function Factory
Build functions like manufacturing blueprints
int add(int a, int b)
Adds two integers
float multiply(float x, float y)
Multiplies two floats
void greet(char* name)
Prints a greeting
int factorial(int n)
Recursive factorial calculation

Function Concept Map

Function = A factory that takes inputs and produces outputs
Parameters = Raw materials (copies of arguments)
Return Value = Finished product
Prototype = Factory blueprint/specification
Function Call Center
Execute your functions with different arguments

Custom Function Call

📋 Pass-by-Value Reminder

Function parameters are copies of arguments. Like photocopying documents - the original stays unchanged!

Call Stack
Function execution stack - Last In, First Out

Call stack is empty

Call a function to see it here!

Complete C Program
Your function factory generates this code
#include <stdio.h>
Your Functions