What are some examples of functions in programming?

What are some examples of functions in programming?

Functions are reusable blocks of code that perform a specific task. For example, in Python, you can define a function like this:

def greet(name):
    return f'Hello, {name}!'

This function takes a name as an argument and returns a greeting.

Can you give me an example in JavaScript?

Sure! In JavaScript, a function can be defined like this:

function add(a, b) {
    return a + b;
}

This function takes two numbers and returns their sum.

What about in Java?

In Java, you can define a function (method) like this:

public int multiply(int x, int y) {
    return x * y;
}

This method multiplies two integers and returns the result.

Are there any built-in functions I should know about?

Yes, most programming languages have built-in functions. For example, in Python, len() returns the length of a list or string, and in JavaScript, Math.max() returns the largest of the given numbers.