Haskell Day6

Basic I/O

Here is the most classic program ever :)

main = do

     print(“Hello Word”)

If we want to get input in Haskell we can use getline function for strings,integers or other basic input data. For example :

main= do

       putStrLn "enter age"

       age <- getLine

       putStrLn("Hello " ++ age ++ " boy")

Let do some fun thing with simple ı/o and some condition situations :)

main= do

          putStrLn "enter age"

          age <- getLine

          if read(age) > 50

                  then do print("You are too old man")

          else

                 do print("Yeah men you have a lot of time for Haskell !")

In line 2 we enter the value of the age.line 3 take the argument and equalize the value of the age variable. In line 4 with read function we can compare a string and a integer because Getline function get string and read function change it.then line in line 4 if do the condition things and “then do” parts is returning part.