createCanvas(300, 300);

​

  // initialization, condition, and incrementation all in one line

  for (let xPos = 50; xPos < width; xPos = xPos + 50)  {

    drawOneHouseAt(xPos, random(200));

  }

}

​

​

function drawOneHouseAt( x, y )  {

    rect(x, 50+y, 40, 40);

    line(x, 50+y, x+20, 30+y);

    line(x+20, 30+y, x+40, 50+y);

}