// Trying to design a flexible database system.
// The stuff to do with animals works fine (on its own)
// but C++ is so strict about types that it will not work
// on humans even though humans have weights and print
// methods. It isn't even close to working on numbers.

#include <string>
#include <iostream>

struct animal
{ string name, species;
  int weight, price;
  animal(string n, string s, int w, int p)
  { name=n; species=s; weight=w; price=p; }
  void print()
  { cout << "  " << name << "/" << species << ":" << weight << "g," << price << "c\n"; } };

struct human
{ string name;
  int weight, phone;
  human(string n, int w, int p)
  { name=n; weight=w; phone=p; }
  void print()
  { cout << "  " << name << ", " << weight << " lbs, " << phone << "\n"; } };

void printall(animal * * data, int N)
{ for (int i=0; i<N; i+=1)
    data[i]->print(); }

animal * reprice(animal * a)
{ a->price = (int)(a->price*1.1 + 0.5);
  return a; }

animal * fatten(animal * a)
{ a->weight = (int)(a->weight*1.2 + 0.5);
  return a; }

void map(animal * f(animal *), animal * * data, int N)
{ for (int i=0; i<N; i+=1)
    data[i] = f(data[i]); } 

void main()
{ animal * * list = new animal * [9];
  list[0] = new animal("anne", "ant", 1, 1);
  list[1] = new animal("bert", "badger", 400, 50);
  list[2] = new animal("colin", "cobra", 50, 75);
  list[3] = new animal("donna", "donkey", 1200, 123);
  list[4] = new animal("ella", "elephant", 345678, 3200);
  list[5] = new animal("frank", "frog", 120, 7);
  list[6] = new animal("geoffrey", "georaffe", 3456, 5450);
  list[7] = new animal("hanna", "hamster", 12, 43);
  list[8] = new animal("iggy", "iguana", 160, 72);

  human * * people = new human * [5];
  people[0] = new human("James", 145, 6341234);
  people[1] = new human("Jason", 132, 8756134);
  people[2] = new human("Jemimah", 107, 3627212);
  people[3] = new human("Jilly", 121, 5551212);
  people[4] = new human("Joe", 180, 2223333);

  int * numbers = new int [7];
  numbers[0] = 0;
  numbers[1] = 11;
  numbers[2] = 222;
  numbers[3] = 3333;
  numbers[4] = 44444;
  numbers[5] = 555555;
  numbers[6] = 6666666;

  cout << "original animals\n";
  printall(list, 9);
  map(reprice, list, 9);
  map(fatten, list, 9);
  cout << "after inflation\n";
  printall(list, 9);
  cout << "\n";

  cout << "original people\n";
  printall(people, 5);
  map(fatten, people, 5);
  cout << "after inflation\n";
  printall(people, 5);
  cout << "\n";

  cout << "original numbers\n";
  printall(numbers, 7);
  cout << "\n"; }