queen-attack: initial commit

cpp/queen-attack/README.md

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+# Queen Attack
+
+Write a program that positions two queens on a chess board and indicates whether or not they are positioned so that they can attack each other.
+
+In the game of chess, a queen can attack pieces which are on the same
+row, column, or diagonal.
+
+A chessboard can be represented by an 8 by 8 array.
+
+So if you're told the white queen is at (2, 3) and the black queen at
+(5, 6), then you'd know you've got a set-up like so:
+
+```plain
+_ _ _ _ _ _ _ _
+_ _ _ _ _ _ _ _
+_ _ _ W _ _ _ _
+_ _ _ _ _ _ _ _
+_ _ _ _ _ _ _ _
+_ _ _ _ _ _ B _
+_ _ _ _ _ _ _ _
+_ _ _ _ _ _ _ _
+```
+
+You'd also be able to answer whether the queens can attack each other.
+In this case, that answer would be yes, they can, because both pieces
+share a diagonal.
+
+## Getting Started
+
+Make sure you have read [the C++ page](http://exercism.io/languages/cpp) on
+exercism.io.  This covers the basic information on setting up the development
+environment expected by the exercises.
+
+## Passing the Tests
+
+Get the first test compiling, linking and passing by following the [three
+rules of test-driven development](http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd).
+Create just enough structure by declaring namespaces, functions, classes,
+etc., to satisfy any compiler errors and get the test to fail.  Then write
+just enough code to get the test to pass.  Once you've done that,
+uncomment the next test by moving the following line past the next test.
+
+```C++
+#if defined(EXERCISM_RUN_ALL_TESTS)
+```
+
+This may result in compile errors as new constructs may be invoked that
+you haven't yet declared or defined.  Again, fix the compile errors minimally
+to get a failing test, then change the code minimally to pass the test,
+refactor your implementation for readability and expressiveness and then
+go on to the next test.
+
+Try to use standard C++11 facilities in preference to writing your own
+low-level algorithms or facilities by hand.  [CppReference](http://en.cppreference.com/)
+is a wiki reference to the C++ language and standard library.  If you
+are new to C++, but have programmed in C, beware of
+[C traps and pitfalls](http://www.slideshare.net/LegalizeAdulthood/c-traps-and-pitfalls-for-c-programmers).
+
+## Source
+
+J Dalbey's Programming Practice problems [http://users.csc.calpoly.edu/~jdalbey/103/Projects/ProgrammingPractice.html](http://users.csc.calpoly.edu/~jdalbey/103/Projects/ProgrammingPractice.html)