I am Converting the ".h" file (bold one) and the ".cpp" file (non bold) from structure to class. I have converted the ".h" file to class, please check, but i am having difficulty changing the ".cpp" part. Can you please explain and convert it for me? Thank you

#ifndef TIME_H #define TIME_H

#include

class Time { public:

void init(Time &t, int hours, int minutes, int seconds); void normalize(Time &t); Time operator +(const Time &t1, const Time &t2); Time &operator +=(Time &t1, const Time &t2); Time operator -(const Time &t1, const Time &t2); Time &operator -=(Time &t1, const Time &t2); bool operator ==(const Time &t1, const Time &t2);

std::ostream &operator <<(std::ostream &os, const Time &t); std::istream &operator >>(std::istream &is, Time &t);

private:

int hours, minutes, seconds; };

#endif

#include #include

#include "time.h"

using namespace std;

void Time :: init(Time &t, int hours, int minutes, int seconds) { if (hours < 0 || hours > 23) throw string("init - Bad hour value"); if (minutes < 0 || minutes > 59) throw string("init - Bad minute value"); if (seconds < 0 || seconds > 59) throw string("init - Bad second value"); t.hours = hours; t.minutes = minutes; t.seconds = seconds; }

void Time :: normalize(Time &t) { if (t.seconds < 0) { t.seconds += 60; t.minutes -= 1; } if (t.minutes < 0) { t.minutes += 60; t.hours -= 1; } if (t.hours < 0) t.hours += 24; t.minutes += t.seconds / 60; t.seconds %= 60; t.hours = (t.hours + t.minutes / 60) % 24; t.minutes %= 60; }

Time operator +(const Time &t1, const Time &t2) { Time result = t1; return operator +=(result, t2); }

Time &operator +=(Time &t1, const Time &t2) { t1.hours += t2.hours; t1.minutes += t2.minutes; t1.seconds += t2.seconds; normalize(t1); return t1; }

Time operator -(const Time &t1, const Time &t2) { Time result = t1; return operator -=(result, t2); }

Time &operator -=(Time &t1, const Time &t2) { t1.hours -= t2.hours; t1.minutes -= t2.minutes; t1.seconds -= t2.seconds; normalize(t1); return t1; }

bool Time :: operator ==(const Time &t1, const Time &t2) { return t1.hours == t2.hours && t1 .minutes == t2.minutes && t1.seconds == t2.seconds; }

ostream Time :: &operator <<(ostream &os, const Time &t) { os << setw(2) << setfill('0') << t.hours << ":" << setw(2) << setfill('0') << t.minutes << ":" << setw(2) << setfill('0') << t.seconds; return os; }

istream Time :: &operator >>(istream &is, Time &t) { char ch; int hours, minutes, seconds; is >> hours; is >> ch; if (ch != ':') throw string(">> - Bad time format"); is >> minutes; is >> ch; if (ch != ':') throw string(">> - Bad time format"); is >> seconds; init(t, hours, minutes, seconds);

return is; }