I need help to make a schedule on dev C++
This is the code that i have right now

This is in my main.cpp
/**********************************************************************************************************
<project firstname="Your Firstname" lastname="Your lastname" projname="SCHEDULER" />
Purpose of Program:

Pseudo Code:

***********************************************************************************************************/
void DisplaySchedule(vector<Schedule> schs)
{
cout<<"-----------------------------CURRENT SCHEDULE----------------------------------------------------\n\n";
for(int i=0;i<schs.size();i++)
{
cout<<"----------------------------------------------------------------------------------\n";
cout<<(i+1)<<".";
schs[i].Display();
}
cout<<endl;
}
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
//FILL IN THE CODES
return 0;
}


And this is in another file name Schedule.h
/********************DR. SUNMONU ************************************
Time and Schedule program, 2/9/19
*********************************************************************/
#pragma once
#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

struct Time
{
int Hour;
int Minute;
int Second;

Time():Time(0,0,0){ } //default constructor - "calls" constructor with parameters

Time(int hr, int min, int sec) //constructor with parameters
{
Hour = hr;
Minute = min;
Second = sec;
};

//read time from user
void ReadTime()
{

}
//show time
void Show()
{
cout<<Hour<<":"<<Minute<<":"<<Second;
}
};

class Schedule
{
public:
Schedule(string day, Time start, Time end, string activity);
void Display();
void Length();//calculates the duration of the schedule
void ReadSchedule();//read schedule from user
private:
string Day;
Time Start; //start of schedule
Time End; //end of schedule
string Activity;
};

Schedule::Schedule(string day, Time start, Time end, string activity)
{
//FILL IN THE CODE
}

//display the schedule horizontally
void Schedule::Display()
{
cout<<setw(5)<<Day<<setw(10);
Start.Show();
cout<<setw(10);
End.Show();
cout<<setw(20);
cout<<Activity<<setw(10);
Length();
cout<<endl;
}

//read schedule from user
void Schedule::ReadSchedule()
{
//FILL IN THE CODE
}

//calculate the difference between start and end time in hours, minutes and seconds
void Schedule::Length()
{
//FILL IN THE CODE
}



The parts that say fill in code are the parts i can not figure out

This is the description of the project
Write a C++ program to display workers schedule for a company. To accomplish this

(1) Write a struct Time with attributes (at least) : hours, minutes and seconds. Add other functions or attributes you need to get the job done

(2) Write a class Schedule with attributes : Day of week, start_time, end_time and activity.
Schedule should have at least (a) Display to display the schedule (b) Length to return the duration of the schedule (ie end_time - start_time), (c) ReadSchedule to read schedule from user

(2b) Your program must check that only appropriate numbers are entered for Time in ReadSchedule (default value for hour/minute and second is 0)
(2c) Your program should indicate error when end_time < start_time.

(3) You should store the schedules in a vector

(4) Create the struct Time and class Schedule in a file named schedule.h which you must include in main.cpp