error: expected constructor, destructor, or type conversion before '(' token.

size(200, 200);

//Color = green
fill(0, 255, 0);

//The head
ellipse(width*.5, height*.5, width*.75, height*.75);

//Eyes = white

//The eyes
ellipse(width*.375, height*.425, width*.15, height*.1);
ellipse(width*.625, height*.425, width*.15, height*.1);

//Eyeball = black

//The pupils
ellipse(width*.375, height*.425, width*.05, height*.05);
ellipse(width*.625, height*.425, width*.05, height*.05);

//Mouth = red
fill(255, 0, 0);

//The mouth
arc(width*.5, height*.625, width*.4, height*.25, 0, 3.14);
line(width*.3, height*.625, width*.7, height*.625);

Hi guys please I need help for my robotics subject
The last row seems to have a problem and I can't fix it.

Here's a snippet of my answer: It's because

Read the how to use this forum-please read sticky to see how to properly post code and some advice on how to ask an effective question. Remove useless white space and format the code with the IDE autoformat tool (crtl-t or Tools, Auto Format) before posting code.

Please include the entire error message. It is easy to do. There is a button (lower right of the IDE window) called "copy error message". Copy the error and paste into a post in code tags. Paraphrasing the error message leaves out important information.