If in Haskell

In Haskell, the if statement is used for conditional execution of code. It has the following syntax:

if  then  else 

Here, is a boolean expression that is evaluated, and based on its value, either or is evaluated and returned as the result of the if statement.

For example, let's say we want to write a Haskell function that takes in two numbers and returns the larger number. We can use if statement to achieve this as follows:

max :: Int -> Int -> Int
max x y = if x > y then x else y

In this code, we first define a function called max that takes in two integers x and y. Inside the function, we use an if statement to check if x is greater than y. If x is greater, we return x as the result of the function, otherwise we return y.

We can call this function as follows:

main = do
    print (max 5 10) -- output: 10
    print (max 15 3) -- output: 15
    print (max 7 7) -- output: 7

In this code, we call max function using different input values and print the results to the console using the print statement.