ABSOLUTE C++ (4TH EDITION) PART 59 PPT

the same remarks apply to any base class and its derived class. You can use an object of a derived class anyplace that an object of its base class is allowed.More generally, an object of a class type can be used anyplace that an object of any of its ances-tor classes can be used. If class Child is d[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]

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]

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]

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]

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]

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]

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]

That in turn is equivalent to 0 > 60, because 60 is the value of limit, and that evaluates to false. Thus, the above logical expression evaluates to false, when you want it to evaluate to true.There are two ways to correct this problem. One way is to use the ! operator correctly. When using t[r]

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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]

As in most programming languages, C++ handles flow of control with branch-ing and looping statements. C++ branching and looping statements are similarto branching and looping statements in other languages. They are the same asin the C language and very similar to what they are in the Java prog[r]

double is output, it will be output in ordinary notation with three digits after the dec-imal point?12. Write a complete C++ program that writes the phrase Hello world to the screen. The program does nothing else.13. Give an output statement that produces the letter ’A’, followed by the newline char[r]

warning message, and some compilers will not object at all. Even if the compiler doesallow you to use the above assignment, it will give intVariable the int value 2, not thevalue 3. Since you cannot count on your compiler accepting the above assignment, youshould not assign a double value to a varia[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]

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]

tinue to do more additions until the user says the program should end.6. Write a program that will allow two users to play tic-tac-toe. The program should ask for moves alternately from player X and player O. The program displays the game positions as follows:123456789The players enter their moves b[r]