int i;
int x, y;

void setup()
{
  size(500,500);
  background(255);
  
  i = 0;
}

void draw()
{

}

void mouseDragged() 
{
  line(x,y,mouseX,mouseY);
  x = mouseX;
  y = mouseY;
}

void mousePressed() 
{
  x = mouseX;
  y = mouseY;
}

void keyPressed() 
{
  strokeWeight(keyCode);
}

void mouseMoved()
{
  stroke(mouseX,mouseY,0);
}