C++ Tutorials
91. class keyword in C++
By: Charles : 2007-09-09
Description: You use the class keyword to declare new types. A class is a collection of class member data, which are variables of various types, including other classes. The class also contains class functions--or methods--which are functions used to manipulate the data in the class and to perform other services for the class. You define objects of the new type in much the same way in which you define any variable. State the type (class) and then the variable name (the object). You access the class members and functions by using the dot (.) operator. You use access control keywords to declare sections of the class as public or private. The default for access control is private. Each keyword changes the access control from that point on to the end of the class or until the next access control keyword. Class declarations end with a closing brace and a semicolon. Example 1
92. Public versus Private members in C++
By: Baski : 2007-09-09
Description: All members of a class--data and methods--are private by default. Private members can be accessed only within methods of the class itself. Public members can be accessed through any object of the class. This distinction is both important and confusing. To make it a bit clearer, consider an example:
93. Tutorial on Classes and Members in C++
By: Abinaya : 2007-09-09
Description: One way to think about a car is as a collection of wheels, doors, seats, windows, and so forth. Another way is to think about what a car can do: It can move, speed up, slow down, stop, park, and so on. A class enables you to encapsulate, or bundle, these various parts and various functions into one collection, which is called an object.
94. The Birth, history and need for C++
By: Emiley J : 2007-09-07
Description: During the late 1970s and early 1980s, C became the dominant computer programming language, and it is still widely used today. Since C is a successful and useful language, you might ask why a need for something else existed. The answer is complexity. Throughout the history of programming, the increasing complexity of programs has driven the need for better ways to manage that complexity. C++ is a response to that need. To better understand why managing program complexity is fundamental to the creation of C++, consider the following.
95. Difference between Procedural, Structured, and Object-Oriented Programming
By: Jagan : 2007-09-04
Description: Until recently, programs were thought of as a series of procedures that acted upon data. A procedure, or function, is a set of specific instructions executed one after the other. The data was quite separate from the procedures, and the trick in programming was to keep track of which functions called which other functions, and what data was changed. To make sense of this potentially confusing situation, structured programming was created.
96. A Brief History of C++
By: Jagan : 2007-09-04
Description: Computer languages have undergone dramatic evolution since the first electronic computers were built to assist in telemetry calculations during World War II. Early on, programmers worked with the most primitive computer instructions: machine language. These instructions were represented by long strings of ones and zeroes. Soon, assemblers were invented to map machine instructions to human-readable and -manageable mnemonics, such as ADD and MOV.
97. C++ and Object-Oriented Programming
By: Priya : 2007-09-04
Description: C++ fully supports object-oriented programming, including the four pillars of object-oriented development: encapsulation, data hiding, inheritance, and polymorphism. Encapsulation and Data Hiding When an engineer needs to add a resistor to the device she is creating, she doesn't typically build a new one from scratch. She walks over to a bin of resistors, examines the colored bands that indicate the properties, and picks the one she needs. The resistor is a "black box" as far as the engineer is concerned--she doesn't much care how it does its work as long as it conforms to her specifications; she doesn't need to look inside the box to use it in her design.
98. Getting Started with C++
By: Priya : 2007-09-04
Description: The question inevitably arises: "Since C++ is a superset of C, should I learn C first?" Stroustrup and most other C++ programmers agree. Not only is it unnecessary to learn C first, it may be advantageous not to do so.
99. Using cout in C++
By: Baski : 2007-09-04
Description: To print a value to the screen, write the word cout, followed by the insertion operator (<<), which you create by typing the less-than character (<) twice. Even though this is two characters, C++ treats it as one.
100. Using Comments in a C++ Program
By: Priya : 2007-09-04
Description: When you are writing a program, it is always clear and self-evident what you are trying to do. Funny thing, though--a month later, when you return to the program, it can be quite confusing and unclear. I'm not sure how that confusion creeps into your program, but it always does.