Question

1. Write a class for time objects that store three integer values for hour, minute, and second. Also, write a program to test the functionality of your class. Make sure it does all of the following:
Create time objects with no values (default)

Create time objects with all three values (hour, minute, second)

Change the value for hour

Display military time

Display standard time

2. Define a class for an elevator that only services three floors. Your class must store variables for CurrentFloor (int), GoingUp (bool), and GoingDown (bool). Write a default constructor function for the class and two member functions: goUp() and goDown(). Write an elevator test program. Have the program execute the following steps using the methods in the class:

Start on the first floor.

Go to the second floor (don’t forget to update the Boolean variable GoingUp).

Go to the third floor

Go to the fourth floor (or at least try to)

Go back to the second floor

Go back to the first floor

Answer 1

Answer:

1.

class TIME

{

int hour , min , sec ;

public :

TIME()

{

hour=min=sec=0;

}

TIME( int h , int m , int s )

{

hour = h;

min = m;

sec = s;

}

void change ( int Hour)

{

hour = Hour;

}

void stdtime()

{

if(hour>12)

cout<<"The Standard time is"<<(hour-12)<<":"<<min<<":"<<sec<<"P.M\n";

else

cout<<"The Standard time is"<<hour<<":"<<min<<":"<<sec<<"A.M\n";

}

void miltime()

{

cout<<"The Military time is"<<hour<<":"<<min<<":"<<sec<<" hours\n";

}

};

void main()

{

TIME A , B(13,25,30);

A .stdtime();

A.change(23);

A.miltime();

B.stdtime();

B.change(9);

B.miltime();

}

2.

class elevator

{

int CurrentFloor;

int GoingUp;

int GoingDown;

public:

elevator()

{

CurrentFloor=0;

GoingUp=1;

GoingDown=-1;

}

elevator(int floor)

{

CurrentFloor=floor;

GoingUp=1;

GoingDown=-1;

}

void goUp(int y)

{

if( CurrentFloor>3)

cout<<"\nNO MORE FLOORS\n";

else

CurrentFloor=CurrentFloor+y*GoingUp;

}

void goDown(int x)

{

if(CurrentFloor<0)

cout<<"\nNO MORE FLOORS";

else

CurrentFloor=CurrentFloor+x*GoingDown;

}

};

void main()

{

elevator A(1);

A.goUp(1);

A.goUp(1);

A.goUp(1);

A.goDown(1);

A.goDown(1);

}