ABSOLUTE C++ (4TH EDITION) PART 48 DOCX

1 //This is the implementation file dtime.cpp of the class DigitalTime.2 //The interface for the class DigitalTime is in the header file dtime.h.3 #include <iostream>4 #include <cctype>5 #include <cstdlib>6 using std::istream;7 using std::ostream;8 using std[r]

function) of the calling object. However, you are allowed even more than that. You may access any private member variable (or private member function) of any object of the class being defined. For example, consider the following few lines that begin the definition of the plus operator for the class[r]

Constructors 263Pitfallmember function set (which we included in the old version of the class shown inDisplay 6.4).CONSTRUCTORS WITH NO ARGUMENTSIt is important to remember not to use any parentheses when you declare a class variable and want the constructor invoked with no arguments. For example, c[r]

36 int indexOfNextSmallest;37 for (int index = 0; index < numberUsed - 1; index++)38 {//Place the correct value in a[index]:39 indexOfNextSmallest =40 indexOfSmallest(a, index, numberUsed);41 swapValues(a[index], a[indexOfNextSmallest]);42 //a[0] <= a[1] <= <= a[index] ar[r]

== birthday.month && today.day == birthday.day)32 cout << "Happy Birthday!\n";33 else34 cout << "Happy Unbirthday!\n";35 return 0;36 }Member function declarationNormally, member variables are private and not public, as in this example. This is discussed a[r]

15. a. Only one. The compiler warns if you have no public: members in a class (or struct, for that matter).b. None, but we normally expect to find at least one private: section in a class.16. The member variables should all be private. The member functions that are part of the interface should be pub[r]

THINKING OBJECTSIf you have not programmed with classes before, it can take a little while to get the feel of pro-gramming with them. When you program with classes, data rather than algorithms takes center stage. It is not that there are no algorithms. However, the algorithms are made to fit the dat[r]

>05_CH05.fm Page 198 Wednesday, August 13, 2003 12:51 PMProgramming with Arrays 199ExampleSORTING AN ARRAYOne of the most widely encountered programming tasks, and certainly the most thoroughly stud-ied, is sorting a list of values, such as a list of sales figures that must be sorted from low[r]

More Tools 283Display 7.4 The const Parameter Modifier (part 2 of 3)40 int dollarsPart(double amount) const;41 int centsPart(double amount) const;42 int round(double number) const;43 double fraction(double percent) const;44 //Converts a percentage to a fraction. For example, fraction(50.3) returns 0[r]

xy+7 3xy+z 2+ 01_CH01.fm Page 22 Wednesday, August 20, 2003 2:21 PMVariables, Expressions, and Assignment Statements 236. What is the output of the following program lines when they are embedded in a correct program that declares number to be of type int? number = (1/3) * 3; cout << "([r]

In cold weather, meteorologists report an index called the wind chill factor, which takes into _ account the wind speed and the temperature.. The index provides a measure of the chilling[r]

1. Write a program that converts from 24-hour notation to 12-hour notation. For example, it should convert 14:25 to 2:25 P.M. The input is given as two integers. There should be at least three functions: one for input, one to do the conversion, and one for output. Record the A.M./P.M. information as[r]

for (int i = 0; i < n; i = i * 2); log++;cout << n << " " << log << endl;80 Flow of Control34. For each of the following situations, tell which type of loop (while, do-while, or for) would work best.a. Summing a series, such as 1/2 + 1/3[r]

\Volume of a box withLength = 4, Width = 6and Height = 2 is 48Volume of a box withLength = 4, Width = 6and Height = 1 is 24Volume of a box withLength = 4, Width = 1and Height = 1 is 4Default argumentsA default argument should not be given a second time.04_CH04.fm Page 160 Wednesday, August 13[r]

You might be tempted to think the function definition could be simplified to the following: To see that this alternative definition cannot work, consider what would happen with this defi[r]

functions.■ A function should be defined so that it can be used as a black box. The programmer who uses the function should not need to know any details about how the function is coded. All the programmer should need to know is the function declaration and the accompanying comment that describes the[r]

For example, the void function initializeScreen, defined below, simply sends a newline command to the screen: void initializeScreen { cout number; 12 cout > totalWeight; 14 iceCreamDiv[r]

tions. Since you can think of the value returned as being a random number, you canuse a random number generator to simulate random events, such as the result of throw-ing dice or flipping a coin. In addition to simulating games of chance, random numbergenerators can be used to simulate things that st[r]

■ DECLARING AND REFERENCING ARRAYS In C++, an array consisting of five variables of type int can be declared as follows: int score[5]; 5.1 ARRAY TRANG 2 Introduction to Arrays 173 This d[r]

if (i < 5 && i != 2) cout << ‘X’;b. for (int i = 1; i <= 10; i = i + 3) cout << ‘X’;c. cout << ‘X’// necessary to keep output the same. Note // also the change in initialization of n for (long n = 200; n < 1000; n[r]