What is a free function in C?

What is a free function in C?

A free function in C is a function that is not associated with any class or object. It's defined outside of any structure.

Can you give me an example of a free function?

Sure! Here's a simple example:

#include <stdio.h>

void greet() {
    printf("Hello, World!\n");
}

int main() {
    greet();
    return 0;
}

In this code, greet is a free function.

What are the advantages of using free functions?

Free functions promote code reusability and modularity. They can be called from anywhere in the program without needing an object.

Are there any limitations to free functions?

Yes, free functions cannot access private or protected members of a class directly, which can limit their use in object-oriented programming.