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Published byBaldric May Modified over 9 years ago
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C++ Coding and Compiling
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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++
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C++ is like C Comments are the same // or /* */ Still need to include header files #include
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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.
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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!
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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
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Lets look at some code
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Compiling C++ g++ file.cpp produces 'a.out' or 'a.exe' Makefiles can also be used (common)
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