Gal Normal

Hey, I've heard about "macros" in programming. What are they?

Geek Curious

Macros are like shortcuts that help us write code more efficiently by replacing a single command with a series of commands.

Gal Happy

Cool! Can you show me a simple example using macros?

Geek Smiling

Sure! Let's use the C programming language, which supports macros.

Step 1: Defining a Macro

Gal Excited

So, how do we create a macro?

Geek Nodding

We use the "#define" directive to define a macro in C. Let's create a macro that squares a number.

#define SQUARE(x) ((x) * (x))

Step 2: Using the Macro

Gal Wondering

How do we use this macro in our code?

Geek Happy

We just use the macro's name, and it replaces the code snippet for us. Let's see it in action!

#include <stdio.h>

#define SQUARE(x) ((x) * (x))

int main() {
    int a = 5;
    int b = SQUARE(a);

    printf("The square of %d is %d\n", a, b);
    return 0;


The square of 5 is 25


Now you know what macros are and how to use them! Macros can be a powerful tool for simplifying your code and making it more efficient. But remember, they can also make your code harder to read if not used wisely. Keep learning and exploring more advanced programming concepts! 🚀