# include 
#include  

using namespace std; 
The class Time 
{
Private: 
Int hh, mm; 
Public: 
Void getTime (void); 
Void displayTime (void); 
}; 

Void Time: : getTime (void) 
{
Cout & lt; <"Enter the time:" & lt; Cout & lt; <"Hours? "; Cin & gt;> hh; 
Cout & lt; <"You can? "; Cin & gt;> Mm; 

} 
Void Time: : displayTime (void) 
{
Cout & lt; <"The time is=" & lt; 

} 
Int main () 
{

Int in; 
Char event_title [40]. 
Cout<" The Welcome Message "& lt; Cout<" Main Menu * * * * * * "& lt; Cout<" "[1] the Add one event & lt; Cout<" "[2] the Delete one event & lt; Cout<" [3] the Add events in batch "& lt; Cout<" [4] Show events "& lt; Cout<" [5] Credits "& lt; Cout<" [6] Exit "& lt; Cout<" * * * * * * * * * * * * * * * * * * "& lt; Cout<" Option (1-6) : "& lt; 
Cout<" Select the options from the Main Menu "& lt; Cin> in; 

The switch (in) 
{

Case 1: cout<" Enter the following information: "& lt; Int the dd, mm, yyyy, et. 
Cout<" The Event Title "& lt; Cin> Event_title; 
Cout<" The Event Date "& lt; Cin> Dd> Mm> Yyyy; 
If (yyyy>=1900 & amp; & Yyyy<=9999)//check year 
{
//check the month 
If (mm>=1 & amp; & Mm<=12) 
{
//check days 
If ((dd>=1 & amp; & Dd<=31) & amp; & Mm==(1 mm==| | 3 | |==5 mm | |==7 mm | |==8 mm | |==10 mm | |==12 mm)) 
CoutElse if ((dd>=1 & amp; & Dd<=30) & amp; & (4 mm==| |==6 mm | | 9 mm==| |==11 mm)) 
CoutElse if ((dd>=1 & amp; & Dd<=28) & amp; & (==2 mm)) 
CoutElse if (dd==29 & amp; &==2 mm & amp; & (yyyy %==0 400 | | (yyyy % 4==0 & amp; & Yyyy % 100! 
=0)))CoutThe else 
Cout<" The date is invalid "& lt; } 
The else 
{
Printf (" the Month is not valid. \ n "); 
} 
} 
The else 
{
Printf (" Year is not valid. \ n "); 
} 
Cout<" The Event Start time "& lt; Time T;//creating objects 
T.g etTime (); 
T.d isplayTime (); 
CoutCout<" The Event End time "& lt; T.g etTime (); 
T.d isplayTime (); 
CoutCout<" The Event Type "& lt; Cin> et; Home//(1) (2) the Work Study (3) (4) Play 
The main (); 

break; 

Case 2: cout<" Enter the date of the event that you want to be does "& lt; Cin> Dd> Mm> Yyyy; 
If (yyyy>=1900 & amp; & Yyyy<=9999)//check year 
{
//check the month 
If (mm>=1 & amp; & Mm<=12) 
{
//check days 
If ((dd>=1 & amp; & Dd<=31) & amp; & Mm==(1 mm==| | 3 | |==5 mm | |==7 mm | |==8 mm | |==10 mm | |==12 mm)) 
Cout<" The Event is does "& lt; Else if ((dd>=1 & amp; & Dd<=30) & amp; & (4 mm==| |==6 mm | | 9 mm==| |==11 mm)) 
Cout<" The Event is does "& lt; Else if ((dd>=1 & amp; & Dd<=28) & amp; & (==2 mm)) 
Cout<" The Event is does "& lt; Else if (dd==29 & amp; &==2 mm & amp; & (yyyy %==0 400 | | (yyyy % 4==0 & amp; & Yyyy % 100! 
=0)))Cout<" The Event is does "& lt; The else 
Cout<" The date is invalid "& lt; } 
The else 
{
Printf (" the Month is not valid. \ n "); 
} 
} 
The else 
{
Printf (" Year is not valid. \ n "); 
} 
The main (); 

Case 3: cout<" Add the events in the batch "& lt; //the Format of one event is DD - MM - MM/hh - MM/YYYY/hh - the event Title/X 
Cout<" The Event Date "& lt; Cin> Dd> Mm> Yyyy; 
If (yyyy>=1900 & amp; & Yyyy<=9999)//check year 
{
//check the month 
If (mm>=1 & amp; & Mm<=12) 
{
//check days 
If ((dd>=1 & amp; & Dd<=31) & amp; & Mm==(1 mm==| | 3 | |==5 mm | |==7 mm | |==8 mm | |==10 mm | |==12 mm)) 
CoutElse if ((dd>=1 & amp; & Dd<=30) & amp; & (4 mm==| |==6 mm | | 9 mm==| |==11 mm)) 
CoutElse if ((dd>=1 & amp; & Dd<=28) & amp; & (==2 mm)) 
CoutElse if (dd==29 & amp; &==2 mm & amp; & (yyyy %==0 400 | | (yyyy % 4==0 & amp; & nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull