MCX2          Marine Biology Case Study Worksheet #2             Mr. Gary Jaye
                       

Implement these member functions as specified. Refer to header files and object diagrams as needed.

#1. 
char Fish::ShowMe() const {
// postcondition: returns a character that can make me visible

  
}
#2. Default constructor
Fish::Fish() : 
// Use constructor initializer list
{}

#3.Explicit value constructor                          
Fish::Fish(int id, const Position & pos)  // Use constructor initializer list
  : 
{}

#4. 
void Environment::AddFish(const Position & pos)   {
// precondition:  no fish already at pos, i.e., IsEmpty(pos)
// postcondition: fish created at pos

}
#5. See object diagram on p. 5 of 8 (Part 2)
      RELEVANT PROTOTYPES:
      1. Neighborhood Fish::EmptyNeighbors(const Environment & env, const Position & pos) const;
      2. Position Neighborhood::Select(int index) const;
      3. void Environment::Update(const Position & oldLoc, Fish & fish);
      4. int RandGen::RandInt(int max);  // *** postcondition: returns int in [0..max)     
void Fish::Move(Environment & env)  {
// precondition:  Fish stored in env at Location()
// postcondition: Fish has moved to a new location in env (if possible)

}
#6. 
apvector<Fish> Environment::AllFish() const  {
// postcondition: returned vector (call it fishList) contains all fish in top-down, left-right order: top-left fish in fishList[0],
//         bottom-right fish in fishList[fishList.length()-1];   # fish in environment is fishList.length()