For f(3,6) What is void doing here I thought the correct answer 31 but the answer is wrong

Question

void f (int x, int y) {
while (x < y) {
printf("%d ", y - x);
x = x + 1;
y = y - 1;
}
}

Answer 1

Mohamad Alkaleeh Answer is 3 1 because there is space after %d

Answer 2

just need change this
print("%d ", y-x);
for this
print("%d", y-x);

xD the space lol

Answer 3

There is no problem with the code
just what is the output?

Answer 4

31 is the answer not?

Answer 5

I think so but Coursera System says wrong

Answer 6

ok I understamd well, int Cursea System the answer is?