function Update () {
var controller : CharacterController = GetComponent(CharacterController);
if (controller.collisionFlags == CollisionFlags.None)
print("Free floating!");

if (controller.collisionFlags & CollisionFlags.Sides)
print("Touching sides!");

if (controller.collisionFlags == CollisionFlags.Sides)
print("Only touching sides, nothing else!");

if (controller.collisionFlags & CollisionFlags.Above)
print("Touching ceiling!");

if (controller.collisionFlags == CollisionFlags.Above)
print("Only touching ceiling, nothing else!");

if (controller.collisionFlags & CollisionFlags.Below)
print("Touching ground!");

if (controller.collisionFlags == CollisionFlags.Below)
print("Only touching ground, nothing else!");

}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void Update() {
CharacterController controller = GetComponent<CharacterController>();
if (controller.collisionFlags == CollisionFlags.None)
print("Free floating!");

if (controller.collisionFlags & CollisionFlags.Sides)
print("Touching sides!");

if (controller.collisionFlags == CollisionFlags.Sides)
print("Only touching sides, nothing else!");

if (controller.collisionFlags & CollisionFlags.Above)
print("Touching ceiling!");

if (controller.collisionFlags == CollisionFlags.Above)
print("Only touching ceiling, nothing else!");

if (controller.collisionFlags & CollisionFlags.Below)
print("Touching ground!");

if (controller.collisionFlags == CollisionFlags.Below)
print("Only touching ground, nothing else!");

}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def Update():
controller as CharacterController = GetComponent[of CharacterController]()
if controller.collisionFlags == CollisionFlags.None:
print('Free floating!')
if controller.collisionFlags & CollisionFlags.Sides:
print('Touching sides!')
if controller.collisionFlags == CollisionFlags.Sides:
print('Only touching sides, nothing else!')
if controller.collisionFlags & CollisionFlags.Above:
print('Touching ceiling!')
if controller.collisionFlags == CollisionFlags.Above:
print('Only touching ceiling, nothing else!')
if controller.collisionFlags & CollisionFlags.Below:
print('Touching ground!')
if controller.collisionFlags == CollisionFlags.Below:
print('Only touching ground, nothing else!')