C++ Coding and Compiling

Why QT/C++ Over Java? Java is easier than C++ Java has built in GUIs Java is multi-platform C/C++ is more used in industry QT adds GUIs to C++ QT adds multi-platform IO to C++

C++ is like C Comments are the same

// or /* */ Still need to include header files

#include

C++ is a little different Declaring variables have 3 flavors

type-expr variableName; type-expr variableName = value; type-expr variableName (value);

Namespaces Like a group of header files. By listing the

namespace, you include all of the files.

Inputs and Outputs cin -Standard Input (Keyboard) cout -Standard Output (Text) cerr -Standard Error Output (Text) These are all examples of 'streams'

Streams are a key way that C++ thinks of inputs and outputs. They are also Objects!

What is an Object? An object is like a structure An object has things that can be done

only to that object An object has attributes that apply only

to it Example: A car is an object

Lets look at some code

Compiling C++ g++ file.cpp

produces 'a.out' or 'a.exe' Makefiles can also be used (common)