ABSOLUTE C++ (4TH EDITION) PART 51 PPT

returned, so the loop ends. In this example the type of the input variable next was2Technically, the Boolean condition works this way: The returned value of the operator >> is aninput stream reference (istream& or ifstream&), as explained in Chapter 8. This stream refer[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]

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]

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]

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]

placing a number within the first pair of square brackets. However, such a number is only acomment; the compiler ignores the number.) The size of the second dimension (and allother dimensions if there are more than two) is given after the array parameter, asshown for the parameterconst char p[][100]I[r]

AMPLE DIALOGUEThis program reads golf scores and showshow much each differs from the average.Enter golf scores:Enter up to 10 nonnegative whole numbers.Mark the end of the list with a negative number.69 74 68 -1Average of the 3 scores = 70.3333The scores are:69 differs from average by -1.3333374 dif[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]

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]

illegal array index05_CH05.fm Page 177 Wednesday, August 13, 2003 12:51 PM178 Arraysvariable, maybe a variable named moreStuff. So the value of moreStuff has been uninten-tionally changed. This situation is illustrated in Display 5.2.Array indexes most commonly get out of range at the first o[r]

ARAMETERSThe const parameter modifier is an all-or-nothing proposition. If you use it for one array param-eter of a particular type, then you should use it for every other array parameter that has that type and that is not changed by the function. The reason has to do with function calls within func[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]

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]

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]

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]

The following generates a pseudorandom floating-point value between 0.0 and 1.0: rand /static_castRAND_MAX The type cast is made so that we get floating-point division rather than intege[r]

struct A{ int member b; int member c;};declare x to have this structure type. Initialize the members of x, member b and member c, to the values 1 and 2, respectively.06_CH06.fm Page 235 Wednesday, August 13, 2003 12:54 PM236 Structures and Classes5. Here is an initialization of a struc[r]

currency 6 class Money 7 { 8 public: 9 Money ; 10 Moneydouble amount; 11 Moneyint theDollars, int theCents; 12 Moneyint theDollars; 13 double getAmount const; 14 int getDollars const; [r]

Include all the following member functions: a constructor to set the month using the first three letters in the name of the month as three arguments, a constructor to set the month using[r]