A Complete Guide to Programming in C++ part 57 pps

... that manages objects via the base class pointer could query the concrete type in a switch statement and call the appropriate method. This solution has a disadvantage; adding derived classes at ... by the array pointers. Additionally define a pointer to the derived class FreshFood. Initialize the pointer with the address of a dynamically allocated object of the same class. ■ Now c...

Ngày tải lên: 06/07/2014, 17:21

... strings illustrate how to use pointers for efficient programming, and that string access via the command line of an application program is used to illustrate pointer arrays. Chapter 18 explains ... each lan- guage element. In addition, filter programs and case studies introduce the reader to a wide range of application scenarios. To gain command over a programming language,...

Ngày tải lên: 06/07/2014, 17:21

... n; Here, any input will be interpreted as a hexadecimal, enabling input such as f 0a or -F7. ᮀ Inputting Floating-Point Numbers The >> operator interprets any input as a decimal floating-point ... three characters: 0 A It is also possible to output the character code for a character. In this case the character code is stored in an int variable and the variable is then out...

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... 2 a. How are operands and operators in the following expression associated? x = –4 * i++ – 6 % 4; Insert parentheses to form equivalent expressions. b. What value will be assigned in part a to ... goto, continue, and break. chapter 6 exercises 92 ■ CHAPTER 5 OPERATORS FOR FUNDAMENTAL TYPES // Evaluating operands in logical expressions. #include <iostream> using namespace...

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... (char)ac yields the value ac of type char. ✓ NOTE ■ JUMPS WITH break, continue, AND goto Structogram for break within a while statement Sample program containing a break statement CONDITIONAL ... program branches to the default label, if available. If you do not define a default label, noth- ing happens. The default does not need to be the last label; it can be followed by addi- ti...

Ngày tải lên: 06/07/2014, 17:21

... apply to naming variables also apply to naming macros. However, it is standard practice to capitalize symbolic constants to distinguish them from the names of variables in a program. Using macros ... macros makes a C++ program more transparent and flexible. There are two main advantages: 1. good readability: You can name a macro to indicate the use of the macro 2. easy to...

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... 'r' 'e' 'e' 'y' 'o' &apos ;a& apos; 'i' 'n' '!'&apos ;a& apos;'g' 'g'' ' ' ' '''t' 0 ... 'B''o' 'b' &apos ;a& apos; 'i' 'l' 'l''d''n'' ' ' ' 'h'...

Ngày tải lên: 06/07/2014, 17:21

... the parameters are available as suitable variables within the functions. Additional indirect memory access is unnecessary. However, the fact that copying larger objects is difficult can be a major ... inline functions in header files, in contrast to “normal” functions. This means the function will be available in several source files. ᮀ Inline Functions and Macros Inline functions a...

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... isLess() Global function swap() Implementing swap() as a method PASSING OBJECTS AS ARGUMENTS ■ 283 ᮀ Passing by Value As you already know, passing by value copies an object that was passed as an argument ... 100. In addition, all multiples of 400 are leap years. February has 29 days in a leap year. ■ Use a switch statement to examine the number of days for months con- taining less...

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... class as this class contains a default constructor. ᮀ Explicit Initialization A class array is initialized as usual by an initialization list. The list contains a constructor call for each array ... the articles in stock. A class designed to perform this task can use an array for ease of data management. An array allows you to access individual objects directly and perform searc...

Ngày tải lên: 06/07/2014, 17:21