The if statement

Watch FunProgramming [Video 11] and [Video 12]

• • Here’s a program I wrote.

int yvalue;

void setup()

{

size(400,400);

background(0); // black screen

strokeWeight(6); // fairly large point size yvalue = 0; // start at the top of the screen

stroke(0,255, 0); // green pen

frameRate(10); // update at 10 frames per second

}

void draw()

{

if(yvalue < 200) // Are we in the top half of the screen?

{

point(200, yvalue); // Yes? = draw one point

}

else // No? = draw two points

{

point(180, yvalue);

point(220, yvalue);

}

yvalue = yvalue + 10;

if (yvalue > 400) // If we are at the bottom of the screen- wrap around

{

yvalue = 0;

background(0);

}

}

• • Can you change it to split into 1,2,4, 8 lines, like this?