In Chapter 10, the class clockType was designed to implement the time of day in a program. Certain applications, in addition to hours, minutes, and seconds, might require you to store the time zone. Derive the class extClockType from the class clockType by adding a member variable to store the time zone. Add the necessary member functions and constructors to make the class functional. Also, write the definitions of the member functions and the constructors. Finally, write a test program to test your class.

Here are included header files:

clockType.h

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//clockType.h, the specification file for the class clockType #ifndef H_ClockType #define H_ClockType class clockType { public: void setTime(int hours, int minutes, int seconds); //Function to set the time. //The time is set according to the parameters. //Postcondition: hr = hours; min = minutes; // sec = seconds // The function checks whether the values of // hours, minutes, and seconds are valid. If a // value is invalid, the default value 0 is // assigned.

void getTime(int& hours, int& minutes, int& seconds) const; //Function to return the time. //Postcondition: hours = hr; minutes = min; // seconds = sec

void printTime() const; //Function to print the time. //Postcondition: The time is printed in the form // hh:mm:ss.

void incrementSeconds(); //Function to increment the time by one second. //Postcondition: The time is incremented by one // second. // If the before-increment time is 23:59:59, the // time is reset to 00:00:00.

void incrementMinutes(); //Function to increment the time by one minute. //Postcondition: The time is incremented by one // minute. // If the before-increment time is 23:59:53, // the time is reset to 00:00:53.

void incrementHours(); //Function to increment the time by one hour. //Postcondition: The time is incremented by one // hour. // If the before-increment time is 23:45:53, the // time is reset to 00:45:53.

bool equalTime(const clockType& otherClock) const; //Function to compare the two times. //Postcondition: Returns true if this time is // equal to otherClock; otherwise, // returns false.

clockType(int hours, int minutes, int seconds); //constructor with parameters //The time is set according to the parameters. //Postcondition: hr = hours; min = minutes; // sec = seconds // The constructor checks whether the values of // hours, minutes, and seconds are valid. If a // value is invalid, the default value 0 is // assigned.

clockType(); //default constructor with parameters //The time is set to 00:00:00. //Postcondition: hr = 0; min = 0; sec = 0 private: int hr; //variable to store the hours int min; //variable to store the minutes int sec; //variable to store the seconds }; #endif

clockTypeImp.cpp

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//Implementation File for the class clockType #include #include "clockType.h" using namespace std; void clockType::setTime(int hours, int minutes, int seconds) { if (0 <= hours && hours < 24) hr = hours; else hr = 0;

if (0 <= minutes && minutes < 60) min = minutes; else min = 0;

if (0 <= seconds && seconds < 60) sec = seconds; else sec = 0; }

void clockType::getTime(int& hours, int& minutes, int& seconds) const { hours = hr; minutes = min; seconds = sec; }

void clockType::incrementHours() { hr++; if (hr > 23) hr = 0; }

void clockType::incrementMinutes() { min++; if (min > 59) { min = 0; incrementHours(); } }

void clockType::incrementSeconds() { sec++;

if (sec > 59) { sec = 0; incrementMinutes(); } }

void clockType::printTime() const { if (hr < 10) cout << "0"; cout << hr << ":";

if (min < 10) cout << "0"; cout << min << ":";

if (sec < 10) cout << "0"; cout << sec; }

bool clockType::equalTime(const clockType& otherClock) const { return (hr == otherClock.hr && min == otherClock.min && sec == otherClock.sec); }

clockType::clockType(int hours, int minutes, int seconds) { if (0 <= hours && hours < 24) hr = hours; else hr = 0;

if (0 <= minutes && minutes < 60) min = minutes; else min = 0;

if (0 <= seconds && seconds < 60) sec = seconds; else sec = 0; }

clockType::clockType() //default constructor { hr = 0; min = 0; sec = 0; }

extClockType.h

// empty

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extClockTypeImp.cpp

// empty

main.cpp

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#include

using namespace std;

int main() { // Write your main here return 0; }