What will the function Strange(20,5) will return?

Question

int Strange(int x,int y)
{
if(x>=y)
{
x=x-y;
return Strange(x,y);
}
else
return x;
}

Answer 1

it is equivalent to x%y (as you are substracting y from x some n(x/y) number of times till x not become -ve), so it will return 20%5 which is 0