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Questions and Answers
What is a class in C++?
What is a class in C++?
Why are instance variables important in C++?
Why are instance variables important in C++?
What is the purpose of an identifier in C++?
What is the purpose of an identifier in C++?
Why is whitespace important in C++ programming?
Why is whitespace important in C++ programming?
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Which datatype is used for storing single precision floating point numbers in C++?
Which datatype is used for storing single precision floating point numbers in C++?
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What is the role of modifiers in C++?
What is the role of modifiers in C++?
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When did Bjarne Stroustrup start working on 'C with Classes'?
When did Bjarne Stroustrup start working on 'C with Classes'?
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What are objects in C++ defined as?
What are objects in C++ defined as?
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What significant features were added in the 1983 version of C++?
What significant features were added in the 1983 version of C++?
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Who developed C programming language?
Who developed C programming language?
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What is the correct timeline of C++ development?
What is the correct timeline of C++ development?
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What were the main concepts used in the development of C by Dennis Ritchie?
What were the main concepts used in the development of C by Dennis Ritchie?
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Study Notes
OOP Concepts
- A class is a template/blueprint that describes the behaviors/states that an object of its type supports.
- A method is a behavior, and a class can contain many methods.
- Instance variables are unique to each object, and an object's state is created by the values assigned to these instance variables.
C++ Basics
- Identifiers are names used to identify a variable, function, class, module, or any other user-defined item.
- Identifiers start with a letter (A-Z or a-z) or an underscore (_) followed by zero or more letters, underscores, and digits (0-9).
- C++ is a case-sensitive programming language, so "Manpower" and "manpower" are two different identifiers.
Whitespace in C++
- A line containing only whitespace, possibly with a comment, is known as a blank line, and the C++ compiler ignores it.
- Whitespace separates one part of a statement from another and enables the compiler to identify where one element in a statement ends and the next begins.
Datatypes in C++
- Built-in datatypes are predefined and wired directly into the compiler, such as int, char, float, double, bool, and void.
- User-defined or abstract data types are created by the user as a class or structure.
- Basic built-in datatypes in C++ include char (1 byte), int (2 bytes), float (4 bytes), double (8 bytes), bool, and wchar_t.
History of C++
- C++ was developed by Bjarne Stroustrup at AT&T Bell Labs.
- C++ is a successor to the C programming language, which was developed by Dennis Ritchie in 1972.
- C++ development began in 1979, and the first commercial edition was released in 1985.
C++ Timeline
- 1979: Stroustrup starts working on "C with Classes" at Bell Labs.
- 1983: "C with Classes" is renamed to "C++".
- 1985: The first edition of "The C++ Programming Language" is released.
- 1989: C++ 2.0 is released.
- 1998: The first ISO Standard (C++98) is released.
- 2003: C++03, bugfixes of C++98, is released.
- 2011: C++11, a major revision, is released.
- 2014: C++14, bugfixes and small improvements of C++11, is released.
- 2017: C++17, the upcoming major version, is planned.
C++ Program
- A C++ program is a collection of objects that communicate via invoking each other's methods.
- An object has states (e.g., color, name, breed) and behaviors (e.g., wagging, barking, eating).
- An object is an instance of a class.
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Description
Learn about the history of C++ programming language, starting from its inception at AT&T Bell Labs by Bjarne Stroustrup. Understand the evolution from C programming to C++, and the key features introduced. Dive into the background of Dennis Ritchie and the development of C programming.