What is c
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What is C++ PowerPoint PPT Presentation

What is C++ . Introduction to the C++ Programming Language. Outline. History What is C++ How does C++ relate to other OO languages Types of applications for C++ Components of MS’s Visual C++ 6.0 Advantages / Disadvantages of C++. History of C++. 1967: "B" and BCPL developed (typeless)

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What is C++

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What is c

What is C++

Introduction to the C++ Programming Language


Outline

Outline

  • History

  • What is C++

  • How does C++ relate to other OO languages

  • Types of applications for C++

  • Components of MS’s Visual C++ 6.0

  • Advantages / Disadvantages of C++


History of c

History of C++

  • 1967: "B" and BCPL developed (typeless)

  • 1972: C language developed at Bell Labs

    • Dennis Ritchie wrote C for Unix OS

    • Needed C for work with Unix

  • late 70s: C becomes popular for OS development by many vendors

    • Many variants of the language developed

    • ANSI standard C in 1987-89


History of c continued

History of C++ (continued)

  • early 80s: Bjarne Stroustrup adds OO features to C creating C++

  • 90s: continued evolution of the language and its applications

    • preferred language for OS and low level programming

    • popular language for application development

    • low level control and high level power


Conceptually what is c

Conceptually what is C++

  • Alternatives:

    • is it C, with lots more options and features?

    • is it an OO programming language with C as its core?

    • is it a development environment?

  • On most systems it is a development environment, language, and library, used for both procedural and object oriented programming, that can be customized and extended as desired


Versions of c

Versions of C++

  • ANSI C++

  • Microsoft C++ (MS Visual C++ 6.0)

  • Other vendors: Borland, Symantec, Turbo, …

  • Many older versions (almost annual) including different version of C too

  • Many vendor specific versions

  • Many platform specific versions


Characteristics of c as a computer language

Characteristics of C++ as a Computer Language

  • Procedural

  • Object Oriented

  • Extensible

  • ...


Other oo languages

Other OO Languages

  • Smalltalk

    • pure OO language developed at PARC

  • Java

    • built on C/C++

    • objects and data types

  • Eifel and others


What you can do with c

What you can do with C++

  • Apps (standalone, Web apps, components)

  • Tiered apps

  • Active desktop (Dynamic HTML, incl Web)

  • Access to MFC

  • Create new controls

  • Create apps with "look and feel" of IE4

  • ActiveX documents (charts, graphs, etc.)

  • Data access (OLE, e-mail, files, ODBC)

  • Integrate components w/ other languages


Microsoft s c

Microsoft’s C++

  • Development Environment

    • project mgmt, editor, debugging tools, user interface to tools

    • Visual Studio 6.0

  • Language (

    • compiler, linker, loader, etc.

    • Visual C++ 6.0

  • Libraries

    • std libraries, iostream, iomanip, stdio, time, string, math, etc.

    • Standard Template Library (STL)


Disadvantages of c

Disadvantages of C++

  • Tends to be one of the less portable languages

  • Complicated!!!

    • 40 operators, intricate precedence, pointers, etc.

    • can control everything

    • many exceptions and special cases

    • tremendous libraries both standard, vendor specific, and available for purchase, but all are intricate

  • Aspects above can result in high cost, maintenance and reliability problems


Advantages of c

Advantages of C++

  • Available on most machines

  • Can get good performance

  • Can get small size

  • Can manage memory effectively

  • Can control everything

  • Good supply of programmers

  • Suitable for almost any type of program (from systems programs to applications)


Steps in developing a c program

Steps in Developing a C++ Program

  • Plan

  • Edit(uses integrated editor)

  • Compile *(converts to binary)

  • Link *(resolves external references)

  • Load (places into memory)

  • Run *(transfers control, executes)

    * IDE reports errors at this step; must fix them


Objectives for a c system

Objectives for a C++ System

  • Solves correct problem

  • Correct solution

    ************ but also

  • Clear documentation (internal and external)

  • Understandable code

  • Maintainable and extendable system

  • Reusable code

    ************ how about

    succinct code?? performance??


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