Kate Gregory Gregory Consulting James Mc Nellis Senior

Kate Gregory | Gregory Consulting James Mc. Nellis | Senior Engineer, Visual C++

Meet Kate Gregory | @gregcons • Consultant (mentor), author, developer • All about community – MVP, RD, user groups, conferences – Stack. Overflow – Twitter, blog, Facebook… • Over 35 years of industry experience • Using C++ since before Microsoft had a C++ compiler

Meet James Mc. Nellis | @James. Mc. Nellis • Senior Software Development Engineer at Microsoft – Currently a member of the Visual C++ Libraries team • One of the top C++ contributors on Stack. Overflow • Using C++ since Microsoft released Visual C++ 6. 0 • Usually has absolutely no idea what he is doing

Course Topics C++: A General Purpose Language and Library 01 | Getting Started 05 | Pointers and RAII – Resource Acquisition is Initialization 02 | Fundamentals 06 | The C++ Standard Library, or STL 03 | The C++ Object Model 07 | Next Steps 04 | References and Inheritance

Setting Expectations • Target Audience – Has done some development in any other programming language – Familiar with concepts like looping, conditional expressions – No need for any C++ background or any C-related language • Suggested Prerequisites/Supporting Material – Book: C++ Primer, 5 th Ed. , by Lippman, Lajoie, and Moo • Software and Tools – Microsoft Visual Studio Express 2013 for Windows Desktop – Free download • Sample Code available – http: //aka. ms/Code. CPlus. JS

Join the MVA Community! • Microsoft Virtual Academy – Free online learning tailored for IT Pros and Developers – Over 1 M registered users – Up-to-date, relevant training on variety of Microsoft products • “Earn while you learn!” – Get 50 MVA Points for this event! – Visit http: //aka. ms/MVA-Voucher – Enter this code: CPlus (expires 12/20/2013)

01 | {Getting Started} Kate Gregory | Gregory Consulting James Mc. Nellis | Senior Engineer, Visual C++

Module Overview • Development Environment • How to write, build, and run code • Quick History of C++ • Variables and Types

Lesson 1 – Development Environment • Development Environment

Development Environment • Visual Studio Express 2013 for Windows Desktop – It’s free and it’s all you need to follow along • Not using Windows? – C++ works on other platforms too – http: //isocpp. org/get-started has links to compilers • Our sample code is available – LINK TBA

DEMO Hello, World!

Lesson 2: How to Write, Build and Run Code • How code is built • Structure of a C++ program • Debugging

The Compilation Process Preprocessor Compiler Linker • Takes your C++ source code and evaluates preprocessor directives. • Produces a preprocessed source file (but usually is just part of compiler). • Takes preprocessed source code, compiles into object files. • Checks that your code conforms to all syntax and semantic rules (e. g. , no type errors). • Accepts promises from the code about things defined in other source files. • Takes object files, links them into an executable program. • Ensures that all of the promises to the compiler are kept.

Structure of a C++ program #include <iostream> int main() { Use a library Special function name that the OS calls to run your program std: : cout << "Hello, World!" << std: : endl; return 0; } std: : cout represents console output << means send the next thing to it

DEMO Building

Debugging • Normally a console application – Starts – Executes the code in main() – Might print to the console (or read from the keyboard) – Terminates (quits) • Under a debugger, you can pause execution – Inspect values – Watch execution proceed – Slower, but vital to understanding

DEMO Debugging

Lesson 3: Quick History of C++ • Born in 1979 as C with Classes – Retains backward compatibility with C • Named C++ in 1983 • Ratified as ISO standard in 1998 • Continues to change under stewardship of a standards committee

Lesson 1: Types • C++ is strongly typed • Fundamental types • Casting (changing type)

DEMO Types

Fundamental Types • Types you use a lot: – int, unsigned int – double – bool • Types you may see – char, unsigned char – long, unsigned long – short, unsigned short – float • http: //msdn. microsoft. com/en-us/library/cc 953 fe 1. aspx

Casting • Instead of writing code that relies on the compiler to convert one type to another, you can ask for it explicitly • i = static_cast<int>(3. 2); • Makes a good “signpost” for others who read your code • Takes away compiler warnings – Always try to build warning free

DEMO Casting

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