int x = 100;
int y = 100;
color c = color(255, 255, 255);
void setup() {

  size(600, 600);
  background(255, 255, 255);
  krugche(x, y, c);
}

void draw() {
}


void krugche(int x, int y, color c) {

  ellipse(width/2, height/2, x, y);
}
void keyPressed() {

  if (keyPressed && key == 'r' ) {
    c =color(255, 0, 0);
  }
  if (keyPressed && key == 'g' ) {
    c =color(0, 255, 0);
  }
  if (keyPressed && key == 'b' ) {
    c =color(0, 0, 255);
  }
  if (keyPressed && key == '1' ) {

    background(255, 255, 255);
    krugche(x, y, c);
  } else if (keyPressed && key == '2' ) {

    background(255, 255, 255);
    krugche(x*2, y*2, c);
  } else if (keyPressed && key == '3' ) {

    background(255, 255, 255);
    krugche(x*3, y*3, c);
  } else if (keyPressed && key == '4' ) {

    background(255, 255, 255);
    krugche(x*4, y*4, c);
  } else if (keyPressed && key == '5' ) {


    background(255, 255, 255);
    krugche(x*5, y*5, c);
  }
  fill(c);

  x=100;
  y=100;
}