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PC-SIG: World of Education
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PC-SiG's World of Education.iso
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disk2368.z!p
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VIRTUAL6.CPP
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1990-07-20
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64 lines
// Chapter 10 - Program 6
#include "iostream.h"
class vehicle {
int wheels;
float weight;
public:
virtual void message(void) { cout << "Vehicle message\n";}
};
class car : public vehicle {
int passenger_load;
public:
void message(void) { cout << "Car message\n";}
};
class truck : public vehicle {
int passenger_load;
float payload;
public:
int passengers(void) {return passenger_load;}
};
class boat : public vehicle {
int passenger_load;
public:
int passengers(void) {return passenger_load;}
void message(void) { cout << "Boat message\n";}
};
main()
{
vehicle *unicycle;
unicycle = new vehicle;
unicycle->message();
delete unicycle;
unicycle = new car;
unicycle->message();
delete unicycle;
unicycle = new truck;
unicycle->message();
delete unicycle;
unicycle = new boat;
unicycle->message();
delete unicycle;
}
// Result of execution
//
// Vehicle message
// Car message
// Vehicle message
// Boat message