| c++ Programming Glossary: polarWhy including same headers in multiple cpp files and then their compilation works? [duplicate] http://stackoverflow.com/questions/20023346/why-including-same-headers-in-multiple-cpp-files-and-then-their-compilation-work  #include xxx.h using namespace std int main rect rplace polar pplace cout Enter the x and y values while cin rplace.x rplace.y.. x and y values while cin rplace.x rplace.y  pplace rect_to_polar rplace show_polar pplace cout Next two numbers q to quit  cout.. cin rplace.x rplace.y  pplace rect_to_polar rplace show_polar pplace cout Next two numbers q to quit  cout Done. n return.. 
 How should I profile visual c++ express? http://stackoverflow.com/questions/3096758/how-should-i-profile-visual-c-express  c profiler   share improve this question   First the polar angular velocity of the car should be proportional to the speed.. 
 private constructor [duplicate] http://stackoverflow.com/questions/4648602/private-constructor  float x float y Rectangular coord's static Point polar float radius float angle Polar coordinates These static methods.. float x float y return Point x y inline Point Point polar float radius float angle return Point radius std cos angle radius.. 
 How to implement the factory pattern in C++ correctly http://stackoverflow.com/questions/5120768/how-to-implement-the-factory-pattern-in-c-correctly  to be able to construct it both from both Cartesian and polar coordinates. Obviously I cannot do struct Vec2 Vec2 float x.. magnitude Vec2 const Cartesian cartesian Vec2 const Polar polar The only disadvantage is that it looks a bit verbose Vec2 v2.. 
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