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ANIMAL.CPP
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C/C++ Source or Header
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1991-07-04
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2KB
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105 lines
// animal.cpp -- Inheritance example
//#include <stream.hpp>
#include <iostream.h>
#include <string.h>
#include <stdlib.h>
#define FALSE 0
#define TRUE 1
class animal {
private:
char name[30]; // The animal's name
public:
animal(const char *s);
const char *getName(void) { return name; }
};
class mammal : public animal {
private:
int offspring; // Number of offspring
public:
mammal(const char *s, int nc);
int numOffspring(void) { return offspring; }
};
class bird : public animal {
private:
int eggs; // Average number of eggs
int nesting; // True if builds nest
public:
bird(const char *s, int ne, int nests);
int getEggs(void) { return eggs; }
const char *buildsNest()
{ if (nesting) return "True"; else return "False"; }
};
void showMammal(mammal &m);
void showBird(bird &b);
main()
{
mammal homoSapiens("Homo Sapiens", 1);
mammal gopher("Gopher", 9);
mammal armadillo("Armadillo", 4);
mammal houseMouse("House Mouse", 12);
bird woodDuck("Wood Duck", 15, FALSE);
bird sandhillCrane("Sandhill Crane", 2, TRUE);
bird loon("Loon", 3, TRUE);
cout << "\n\nMammals:";
showMammal(homoSapiens);
showMammal(gopher);
showMammal(armadillo);
showMammal(houseMouse);
cout << "\n\nBirds:";
showBird(woodDuck);
showBird(sandhillCrane);
showBird(loon);
exit(0);
}
/* -- Display functions */
void showMammal(mammal &m)
{
cout << "\nName ............... " << (m.getName());
cout << "\n Avg offspring ..... " << (m.numOffspring());
}
void showBird(bird &b)
{
cout << "\nName ............... " << (b.getName());
cout << "\n Avg no. eggs ...... " << (b.getEggs());
cout << "\n Builds a nest ..... " << (b.buildsNest());
}
/* -- Class constructors */
animal::animal(const char *s)
{
strncpy(name, s, 29);
}
mammal::mammal(const char *s, int nc) : animal(s)
{
offspring = nc;
}
bird::bird(const char *s, int ne, int nests) : animal(s)
{
eggs = ne;
nesting = nests;
}
// Copyright (c) 1990 by Tom Swan. All rights reserved
// Revision 1.00 Date: 09/24/1990 Time: 10:04 am
// Revision 1.01 Date: 07/03/1991 Time: 09:07 pm
// Converted for Borland C++ 2.0