void yes( int yes){
    yes = 5;
    return yes; 
}

void main (string y, int x, int yooo) {
    x = 15;
    while (x < 20) {
        x = x + 1 -16;
        y = "hello";
        if (x == 17) {
            y = "world";
        }
    }

    yooo = yes(5);  

    return x;
}