1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// Fig. 6.22: time4.cpp
// Member-function definitions for Time class.
// include definition of class Time from time4.h
#include "time4.h"
// constructor function to initialize private data;
// calls member function setTime to set variables;
// default values are 0 (see class definition)
Time::Time( int hr, int min, int sec )
{
setTime( hr, min, sec );
} // end Time constructor
// set values of hour, minute and second
void Time::setTime( int h, int m, int s )
{
hour = ( h >= 0 && h < 24 ) ? h : 0;
minute = ( m >= 0 && m < 60 ) ? m : 0;
second = ( s >= 0 && s < 60 ) ? s : 0;
} // end function setTime
// return hour value
int Time::getHour()
{
return hour;
} // end function getHour
// POOR PROGRAMMING PRACTICE:
// Returning a reference to a private data member.
int &Time::badSetHour( int hh )
{
hour = ( hh >= 0 && hh < 24 ) ? hh : 0;
return hour; // DANGEROUS reference return
} // end function badSetHour
/**************************************************************************
* (C) Copyright 1992-2002 by Deitel & Associates, Inc. and Prentice *
* Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
|
