What is an R Function?

In R, a function is a block of code that is designed to perform a specific task. Functions allow you to reuse code by defining it once and calling it whenever needed. Functions can take inputs, known as arguments, and return outputs.

# Defining a function in R
my_function <- function(x, y) {
    result <- x + y
    return(result)
}

# Calling the function
sum <- my_function(3, 5)
print(sum)  # Output: 8

In this example, my_function is defined to add two numbers x and y. The function is then called with the arguments 3 and 5, and it returns the sum, which is 8. Functions in R are powerful tools for organizing code, reducing redundancy, and making programs easier to maintain.