Question

Writing Overloading Operators [ Time.h, Time.cpp, and TimeDriver.cpp ]
Purpose. The purpose of this lab is for you to learn how to create and apply the overloaded operators commonly used in C++ data structures.

Requirements. Modify the 3 lab 1b files: Time.h, Time.cpp, and TimeDriver.cpp by adding overloaded operators. Add these overloaded operators:

< (less-than), comparing two Time objects based on their total time values -- 3600*hours + 60*minutes + seconds

== (equals), comparing their total time values -- not

You may write these overloaded operator functions as getter member functions or stand-alone, as you wish. Put any stand-alone prototypes in Time.h, AFTER the closing curly brace and semicolon of the class definition, and ABOVE the closing #endif. Put any stand-alone function definitions in Time.cpp WITHOUT a Time:: scope resolution.

Modify the driver CPP so that it fully tests your overloaded operators.

Program I/O. Input: All hard-coded in the driver CPP only. Output: From the driver CPP only, console (cout) output only.

Answer 1

Here is the code for Time.h:

class Time
{
public:
Time( int, int, int ); //Initializes a Time object

void setHour( int ); //Set hour data member to a value between 1 and 12
void setMinute( int ); //Set minute data member to a value between 0 and 59
void setSecond( int ); //Set second data member to a value between 0 and 59

int getHour(); //Returns the contents of the hour data member
int getMinute(); //Returns the contents of the minute data member
int getSecond(); //Returns the contents of the second data member

void printTime(); //Prints the contents of a Time object (hour:minute:second)
bool operator<(Time t) const;   //Returns true if first time is less than second time.
bool operator==(Time t) const; //Returns true if both times are equal.

private:
int hour, minute, second;
};

And the code for Time.cpp is:

#include <iostream>
#include <iomanip>
#include "Time.h"
using namespace std;
  
Time::Time(int hours, int minutes, int seconds)
{
setHour(hours);
setMinute(minutes);
setSecond(seconds);
}
void Time::setHour(int hours)
{
if(hours < 1 || hours > 12)
hours = 12;
else
hour = hours;
}
void Time::setMinute(int minutes)
{
if(minutes < 1 || minutes > 60)
minute = 60;
else
minute = minutes;
}
void Time::setSecond(int seconds)
{
if(seconds < 1 || seconds > 60)
seconds = 60;
else
second = seconds;
}
int Time::getHour()
{
return hour;
}
int Time::getMinute()
{
return minute;
}
int Time::getSecond()
{
return second;
}   
void Time::printTime()
{
cout<<setfill('0')<<setw(2)<<getHour()<<":"<<setfill('0')<<setw(2)<<getMinute()<<":"<<setfill('0')<<setw(2)<<getSecond();
}
bool Time::operator<(Time t) const
{
if((3600*hour + 60*minute + second) < (3600*t.getHour() + 60*t.getMinute() + t.getSecond()))
return true;
return false;
}
bool Time::operator==(Time t) const
{
if(hour == t.getHour() && minute == t.getMinute() && second == t.getSecond())
return true;
return false;
}
  

And finally TimeDriver.cp is:

#include "Time.cpp"
int main()
{
Time time1 (10, 3, 28);
Time time2 (9, 8, 10);
Time time3 (11, 50, 10);
cout<<"The first time is: ";
time1.printTime();
cout<<endl<<"The second time is: ";
time2.printTime();
cout<<endl<<"The third time is: ";
time3.printTime();
cout<<endl;
if(time1 < time2)
{
time1.printTime();
cout<<" is less than ";
time2.printTime();
cout<<endl;
}
else
{
time2.printTime();
cout<<" is less than ";
time1.printTime();
cout<<endl;
}
if(time1 == time2)
{
time1.printTime();
cout<<" is equal than ";
time2.printTime();
cout<<endl;
}
else
{
time2.printTime();
cout<<" is not equal than ";
time1.printTime();
cout<<endl;
}
}

And the output screenshot is:

Terminal Shell Edit View Window Help Θ < > f) 95% B ), Thu 8 Sep 16:32 ANANDA UMMAPUDI a E GTimeDriver.cpp Currently Open Docum...che ggCPP/ Time.cpp h Time.h h TimeClass.h #include "Tine.cpp" int main) Time time1 (10, 3, 28); Time time2 (9, 8, 10); Time time3 (11, 50, 10); cout«c"The first time is : "; time1.printTime(); cout<<endl<<The second time time2.printTime(); cout<cendl<<"The third time time3.printTime(); cout<cendl; if (time1 < time2) TimeDriver.cpp untitled text 4... HomeworkLibCPPbash-113x36 10 /HomeworkLibCPPbash /HomeworkLibCPPbash Macintosh:HomeworkLibCPP AnandaKumarThummapudis g++ TimeDriver.cpp Macintosh: HomeworkLibCPP AnandaKumarThummapudi$ ./a.out The first time is: 10:03:28 The second time is: 09:08:10 The third time is: 11:50:10 09:08:10 is less than 10:03:28 09:08:10 is not equal than 10:03:28 Macintosh:HomeworkLibCPP AnandaKumarThummapudis 14 time1.printTime(); cout< is less than "; time2.printTime); cout<cendl; 19 else time2.printTime(); cout<<" is less than "; time1.printTime); cout<<endl; 24 28 if (time1 time2) time1.printTime(); cout<<" is equal than "; time2.printTime(); cout<cendl; 30 31 else time2.printTime); cout<<" is not equal than time1.printTime(); cout<<endl; 37 40 41

If you need any refinements, just get back to me.