quadratic equation using processing

Question

I'm trying to learn programming and thought processing would be fun before going into java. I have learned to do many things in processing like shapes, colors and Boolean expressions but I'm lost in trying to make a program of an equation, particularly the quadratic equation (I've heard it is the best for beginners) but I'm having lots of difficulty trying to do so. Does anyone know how to do it or produce an example? I'd love to see how programming an equation using processing would work -as all I've seen is examples on java or C.

Answer 1

Processing can do pretty much anything a calculator can do. So if you want to write a function that returns the result of the quadratic equation, well, you just write a function that returns the result of the quadratic equation!

void setup(){
  println(quadratic(5, 6, 1));
}

float quadratic(float a, float b, float c){
  return (-b + sqrt( b*b - 4*a*c)) / (2*a);
}

This is just one of the results, but calculating the other side would be pretty much the same.