/*
--- CSU213 Fall 2006 Lecture Notes ---------
Copyright 2006 Viera K. Proulx

Lecture 14: October 5, 2006
Overloading Constructors
*/
/*
1. Define the class that represent temperature.

Being in the USA we assume the temperature is given in Fahrenheit.
If the given temperature is below -100 make it 100
If it is above +150 make it 150.
*/

/*
+----------+
| Temp     |
+----------+
| double t |
+----------+

*/

// to represent a temperature reading
class Temp {
  double t;   // the temperature measured in Fahrenheit

  // the primary constructor
  Temp(double t) {
    if (t < -100)
      this.t = -100;
    else if (t > 150)
      this.t = 150;
    else
      this.t = t;
  }

/*
Now add a constructor that takes a number and a character C or F
to record the temperature.

*/
  Temp(double t, char fc){
    this(t);
    if ((fc == 'C') || (fc == 'c'))
      this.t = this.t * 9 / 5.0 + 32;
  }


/*
Then add methods that produce the temperature in C or in F 
or as a String with C or as a String with F
*/

  // provide the temperature in Centigrades
  double getTempC(){
    return (this.t - 32) * 5 / 9;
  }

  // provide the temperature as a String
  String asString(){
    return String.valueOf(Math.round(this.t) + " F");
  }
}

class Examples {
  Examples () {}

  Temp f20a = new Temp(20.0);
  Temp f20b = new Temp(20);
  Temp f20c = new Temp(20.0, 'F');
  Temp f20d = new Temp(20.0, 'C');
  Temp f20e = new Temp(20, 'F');
  Temp f20f = new Temp(20, 'c');
  Temp f20g = new Temp(20.0, 'f');

  // test the method getTempC
  boolean testGetTempC = 
    (check this.f20a.getTempC() expect -6.666 within 0.01) &&
    (check (new Temp(32)).getTempC() expect 0.0 within 0.01) &&
    (check (new Temp(-40)).getTempC() expect -40.0 within 0.01) &&
    (check (new Temp(0, 'c')).getTempC() expect 0.0 within 0.01);

  // test the method asString
  boolean testAsString = 
    (check this.f20a.asString() expect "20 F");

}