<![CDATA[//******************************************************************
// IMPLEMENTATION FILE (date.cpp)
// This file implements the Date class member functions
//******************************************************************
#include "date.h"
#include <iostream>
#include <cstring> // For strcpy() and strlen()
using namespace std;
// Private members of class:
// int mo;
// int day;
// int yr;
// char* msg;
//******************************************************************
Date::Date( /* in */ int initMo,
/* in */ int initDay,
/* in */ int initYr,
/* in */ const char* msgStr )
// Constructor
// Precondition:
// 1 <= initMo <= 12
// && 1 <= initDay <= maximum number of days in month initMo
// && 1582 < initYr
// && msgStr is assigned
// Postcondition:
// mo == initMo && day == initDay && yr == initYr
// && msg points to a duplicate of the msgStr string on the
// free store
{
mo = initMo;
day = initDay;
yr = initYr;
msg = new char[strlen(msgStr) + 1];
// Assert:
// Storage for dynamic C string is now on free store
// and its base address is in msg
strcpy(msg, msgStr);
// Assert:
// Incoming string has been copied to free store
}
//******************************************************************
Date::~Date()
// Destructor
// Postcondition:
// Array pointed to by msg is no longer on the free store
{
delete [] msg;
}
//******************************************************************
Date::Date( const Date& otherDate )
// Copy-constructor
// Postcondition:
// mo == otherDate.mo
// && day == otherDate.day
// && yr == otherDate.yr
// && msg points to a duplicate of otherDate's message string
// on the free store
{
mo = otherDate.mo;
day = otherDate.day;
yr = otherDate.yr;
msg = new char[strlen(otherDate.msg) + 1];
strcpy(msg, otherDate.msg);
}
//******************************************************************
void Date::CopyFrom( /* in */ Date otherDate )
// Postcondition:
// mo == otherDate.mo
// && day == otherDate.day
// && yr == otherDate.yr
// && msg points to a duplicate of otherDate's message string
// on the free store
{
mo = otherDate.mo;
day = otherDate.day;
yr = otherDate.yr;
delete [] msg; // Deallocate the
// original array
msg = new char[strlen(otherDate.msg) + 1]; // Allocate a new
// array
strcpy(msg, otherDate.msg); // Copy the chars
}
//******************************************************************
void Date::Print() const
// Postcondition:
// Date and message have been output in the form
// month day, year message
// where the name of the month is printed as a string
{
switch (mo)
{
case 1 : cout << "January";
break;
case 2 : cout << "February";
break;
case 3 : cout << "March";
break;
case 4 : cout << "April";
break;
case 5 : cout << "May";
break;
case 6 : cout << "June";
break;
case 7 : cout << "July";
break;
case 8 : cout << "August";
break;
case 9 : cout << "September";
break;
case 10 : cout << "October";
break;
case 11 : cout << "November";
break;
case 12 : cout << "December";
}
cout << ' ' << day << ", " << yr << " " << msg;
}
]]>