Creating functions()

• • Functions are used to make your code easier to write. Here’s a program I wrote:

float x_val; // the x value of each point

float y_val; // the y value of each point

void setup()

{

size(400,400);

strokeWeight(6);

frameRate(4);

colorMode(HSB);

}

void draw()

{

background(0);

stroke(random(255),255,255); // get a random color

x_val = (random(400));

y_val = (random(400));

point(x_val,y_val);

point(x_val,y_val+10);

point(x_val,y_val-10);

point(x_val+10,y_val);

point(x_val-10,y_val);

}

• • Watch Fun Programming Video [19]

  • Change the program to use a function like this:

void drawCross()

{

point(x_val,y_val);

point(x_val,y_val+10);

point(x_val,y_val-10);

point(x_val+10,y_val);

point(x_val-10,y_val);

}

• • Learning functions is really important. On this challenge, please show a mentor so we can check your code before marking the board and getting a prize.