I found this line of a code in a class which I have to modify: ::Configuration * tmpCo = m_configurationDB;//pointer to current db and I don't know what exactly means the double …

95 .cpp is the recommended extension for C++ as far as I know. Some people even recommend using .hpp for C++ headers, just to differentiate from C. Although the compiler doesn't care …

Sep 23, 2008 · I just want to point out to anyone new coming along that ever since C++11, explicit can be applied to more than just constructors. It's now valid when applied to conversion …

For variables, specifies that the type of the variable that is being declared will be automatically deduced from its initializer. For functions, specifies that the return type is a trailing return type …

I'm reading "Think in C++" and it just introduced the extern declaration. For example: extern int x; extern float y; I think I understand the meaning (declaration without definition), but I wonde...

Nov 13, 2009 · I want to use the PI constant and trigonometric functions in some C++ program. I get the trigonometric functions with include <math.h>. However, there doesn't seem to be …

It depends on what compiler you're using. For example, if you are using Visual C++ .NET 2010 Express, run Visual C++ 2010 Express Command Prompt from the start menu, and you can …

We used a forward declaration so that the compiler would know what " add " was when compiling main.cpp. As previously mentioned, writing forward declarations for every function you want to …

Possible Duplicates: *.h or *.hpp for your class definitions What is the difference between .cc and .cpp file suffix? I used to think that it used to be that: .h files are header files for C and C...

There is more information here on how to deal with this problem: Where does Visual Studio look for C++ header files? For me, I followed xflowXen's answer and then at "Include Directories" …