Functional programming

Question 1

Haskell data types

Answer 1

Int - whole numbers with limited range
Integer- whole numbers with larger range
bool - true false
char- characters
float- fractional numbers

Question 2

Example haskell function

Answer 2

addone :: Int -> Int ( takes int value and returns int value)
addone n = n+1

h:: Float -> Float
h n = n/1.5

Question 3

Prebuilt function

Answer 3

sum[1..5] = 15
max 2 7
min 2 7
gcd

Question 4

Operatiors

Answer 4

&& and
|| or
not = not

Question 5

Strings

Answer 5

goodbye :: String -> String
goodbye n = “hello”

“hello “++”world””
“hello world”

putStr function gives new line when \n is mentioned

Question 6

Functions continued

Answer 6

sumtwo :: Int -> Int -> Int
sumtwo m n = m + n

Question 7

Guards

Answer 7

Used to express various cases

biggest :: Int -> Int -> Int
biggest x y
|x>=y =x
|otherwise = y

Question 8

nested conditional expression

Answer 8

f:: String -> Int -> Int -> String - > String
f sex height weight haircolor =
if sex == “male” then
if height < 160 then
“you are a bit short”
else if weight < 70 then
“you are thin”

i aint doin allat