Answer to Question #310004 in C++ for Rishab

Question

WAP to create a class Time having members as hours, minutes and seconds . Initialize the object by using parameterized and copy constructor. Write the functions for addition and difference of Time objects.

Answer 1

#include <iostream>
using namespace std;


class Time{
	//Data members should be hours, minutes and seconds.
	int hours;
	int minutes;
	int seconds;
public:
	//Set data members as zero in default constructor.
	Time()
	{
		this->hours = 0;
		this->minutes = 0;
		this->seconds = 0;
	}
	//Take one object in main to set 23:24:59 hrs.
	Time(int hours, int minutes, int seconds)
	{
		this->hours = hours;
		this->minutes = minutes;
		this->seconds = seconds;
	}


	void add_time()
	{
		this->seconds++;
		if(this->seconds >= 60){
			this->minutes ++; 
			this->seconds = this->seconds % 60; 
		} 
		if(this->minutes >= 60){
			this->hours ++; 
			this->minutes  = this->minutes  % 60; 
		}
		if(this->hours >= 24){
			this->hours=0;
		}
	}
	Time* computeTimeSum(Time t2){
		Time* sumTime=new Time();
		sumTime->seconds = this->seconds + t2.seconds;
		sumTime->minutes = this->minutes + t2.minutes;
		sumTime->hours = this->hours + t2.hours;


		//implement mechanism to convert time in proper format
		if(sumTime->seconds >= 60){
			sumTime->minutes += sumTime->seconds / 60;
			sumTime->seconds = sumTime->seconds % 60;
		}
		if(sumTime->minutes >= 60){
			sumTime->hours += sumTime->minutes / 60;
			sumTime->minutes = sumTime->minutes % 60;
		}
		return sumTime;
	}


	Time* computeTimeDifference(Time t2){


		int totalSeconds1, totalSeconds2, differenceSeconds, tempMinutes;


		totalSeconds1= (hours*3600)+(minutes*60)+seconds;
		totalSeconds2= (t2.hours*3600)+(t2.minutes*60)+t2.seconds;


		if(totalSeconds1>totalSeconds2){
			differenceSeconds = totalSeconds1 - totalSeconds2;
		}else{
			differenceSeconds = totalSeconds2 - totalSeconds1;
		}
		Time* difference=new Time();
		difference->seconds = differenceSeconds%60;
		tempMinutes = differenceSeconds/60;
		difference->minutes = tempMinutes%60;
		difference->hours = difference->minutes/60;
		return difference;
	}


	//Display time in the given format 23:24:59 hrs.
	void display(){
		cout<< this->hours << ":" << this->minutes << ":" << this->seconds<<" hrs";
	}
};


int main(){
	int hours,minutes,seconds;
	cout << "Enter the first time (hours minutes seconds): ";
	cin>> hours >> minutes >> seconds;
	Time t1(hours, minutes, seconds);
	t1.display();


	cout << "\nEnter the second time (hours minutes seconds): ";
	cin>> hours >> minutes >> seconds;
	Time t2(hours, minutes, seconds);
	t2.display();


	cout<<"\n\nDifference time: ";
	Time* differenceTime=t2.computeTimeDifference(t1);
	differenceTime->display();
	cout<<"\n\nSum time: ";
	Time* sumTime=t2.computeTimeSum(t1);
	sumTime->display();




	delete differenceTime;
	delete sumTime;


	system("pause");
	return 0;
}