Help_processing coding

void setup(){
size(400, 400);
background(190,255,255);
strokeWeight(30);
stroke(0,0,0,50);

int a = 0;
int b = 10;
int c = 7;
int d = random(8,16,20);
point(a,b);
}
for (i = a; i <= width; i += a+d) {

if( j = b i > 400; j += b );
e = true;
} else {
e = false;
}
if(e == true) {
point(i,b);
}
if(c == false) {
point(i,b+10);
}
void draw(){

}

The values of points (a,b)
Add ‘d’(random) to ‘a’ and list with the following values.
Y value b wants to be added by 10.
Help me, please.
Thank you very much