A c JS Challenge question which İ don't understand

Question

what is the output
function func(x) {
return function(y) {
return function(z) {
return x*y+z
}
}
}

document. writein(3,2,3)
the correct answer is 9

Answer 1

@Ammar - post the quizz as it is, not your interpretation of it.
@Kirk - the actual quizz is just fine and the correct answer is 9 😉

Answer 2

sorry, I was on the phone before :D
original quizz is :
function func(x) {
return function(y) {
return function(z) {
return x*y+z;
}
}
}

document.write( func(3)(2)(3) );

so func() takes a param "x" that returns
another function that takes a param "y" and returns
another function that takes a param "z" and returns
x*y + z;

when you call func(3)(2)(3) by the time you reach the last function that returns a value x is 3, y is 2, z is 3, so the total result is 3*2+3 = 9

Answer 3

Nice explanation sir

Answer 4

i think you're missing semicolons sir as well as braces? if im right? correct me if im wrong sir @kirk schafer

Answer 5

edit: it looks like the quiz is okay, see @Nikolay's answer]

old.......
1: function func(x)
2: return function(y)
3: return function(z)
4: return x*y+z

Uncaught SyntaxError: Unexpected token 'return', line 2.

[edit: as written...] I'd report that.

Answer 6

@rookie - I just copied the question's text; I haven't seen the quiz itself.
@Nikolay's apparently seen it so I edited my answer.

Answer 7

Thanks!

And sorry if my writing of the question wasn't clear* the question has since been corrected.