Chapter 11: Programming Projects
1. You are to create an interactive program that will
present the following menu.
0: Quit
1: Add an Event
2: View Events
An Event is a structure or class as follows:
long julianDate; // the date the event is scheduled
// for
long theTime; // the time the event is scheduled
// for
char theEvent[256]; // the statement about the event
This program will be written in C++ and you will create
the following C++ classes.
CMenu - stores a list of menu items; presents those
menu items on the screen; reads a selected menu
item and returns an integer value representing
the item selected.
CDateTime - acquires the current date and time from the
system; keeps the date in gregorian and
julian formats; holds a string that
represents the current date, i.e.
"Monday, November 27, 1995"; holds the time
in hh:mm:ss format and in twenty-four hour
format. Overload the following operators:
+ : adds a specified number of days to a julian
date.
- : substracts a specified number of days from a
julian date.
CDocument - opens a disk file and stores or retrieves
data from the file depending upon which
method of the class is called. The
constructor is passed the name of the file
to open, if the file does not exist then it
is created. The file is assumed to always
be a binary data file. This class holds
the data for the events. Overload the
following operators:
++ : move to next item in document
-- : move to previous item in document
+ : add a new item to the document
- : delete an item from the document
CView - displays data on the screen, one screen at a
time; supports the input of 'N' or 'n' for next
screen and 'P' or 'p' for previous screen;
also, 'q' or 'Q' for quit which returns back to
the main menu.
In order for the program to obtain the current date and
time from the operating system. The date and time can
be obtained by calling the time() and
localtime() functions. The following is a
sample program that obtains the date and time from the
system:
#include
#include
#include
main()
{
struct tm *ptr;
int nseconds;
nseconds = time( (time_t)NULL );
ptr = localtime( &nseconds );
printf("\nptr->tm_sec = %d",ptr->tm_sec);
printf("\nptr->tm_min = %d",ptr->tm_min);
printf("\nptr->tm_hour = %d",ptr->tm_hour);
printf("\nptr->tm_mday = %d",ptr-tm_mday);
printf("\nptr->tm_mon = %d",ptr->tm_mon);
printf("\nptr->tm_year = %d",ptr->tm_year);
printf("\nptr->tm_wday = %d",ptr->tm_wday);
printf("\nptr->tm_yday = %d",ptr->tm_yday);
printf("\nptr->tm_isdst = %d",ptr->tm_isdst);
printf("\n");
}
The structure, struct tm, has the following
layout:
struct tm
{
int tm_sec; /* seconds after the minute ( 0 - 59 ) */
int tm_min; /* minutes after the hour ( 0 - 59 ) */
int tm_hour; /* hours since midnight ( 0 - 23 ) */
int tm_mday; /* day of the month ( 1 - 31 ) */
int tm_mon; /* month of the year ( 0 - 11 ) */
int tm_year; /* years since 1900 */
int tm_wday; /* days since Sunday ( 0 - 6 ) */
int tm_yday; /* day of the year ( 0 - 365 ) */
int tm_isdst; /* daylight savings time flag */
/* ( 1 = dst ) */
};
2. Write a program that maintains a list of contacts that
you have made at various businesses. The program will
be menu driven and present the following menu:
1. Add a contact
2. Show contacts
3. Quit application.
The data held for each contact should be as follows:
Field Type
-----------------------------
First Name CString
Last Name CString
Title CString
Company CString
Company Type CString
Address CString
Address2 CString
City CString
State CString
Zip CString
Voice Phone CString
Fax Phone CString
Home Phone CString
Home Fax Phone CString
E-Mail Address CString
Last Contact CDateTime
The following classes need to be developed for the
application:
CMenu - stores a list of menu items; presents those
menu items on the screen; reads a selected menu
item and returns an integer value representing
the item selected.
CDateTime - acquires the current date and time from the
system; keeps the date in gregorian and
julian formats; holds a string that
represents the current date, i.e.
"Monday, November 27, 1995"; holds the time
in hh:mm:ss format and in twenty-four hour
format. Has a constructor that is
initialized with the month, day, and year
for a specified date. Overload the
following operators:
+ : adds a specified number of days to a julian
date.
- : substracts a specified number of days from a
julian date.
CDocument - opens a disk file and stores or retrieves
data from the file depending upon which
method of the class is called. The
constructor is passed the name of the file
to open, if the file does not exist then it
is created. The file is assumed to always
be a binary data file. This class
holds the data that is being managed.
Overload the following operators:
++ : move to next item in document
-- : move to previous item in document
+ : add a new item to the document
- : delete an item from the document
CView - displays data on the screen, one screen at a
time; supports the input of 'N' or 'n' for
next screen and 'P' or 'p' for previous screen;
also, 'q' or 'Q' for quit which returns back to
the main menu.