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  1. What does '&' do in a C++ declaration? - Stack Overflow

    I am a C guy and I'm trying to understand some C++ code. I have the following function declaration:

  2. What is the difference between a .cpp file and a .h file?

    May 17, 2009 · The .cpp file is the compilation unit: it's the real source code file that will be compiled (in C++). The .h (header) files are files that will be virtually copied/pasted in the .cpp files where the …

  3. C++ code file extension? What is the difference between .cc and .cpp

    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 what you do, …

  4. What is the difference between .cc and .cpp file suffix?

    Sep 3, 2013 · What is the difference between .cc and .cpp file extensions? From Google, I learned that they are both from the C++ language, but I am unsure of differences between them.

  5. What does the "::" mean in C++? - Stack Overflow

    Mar 17, 2011 · What does this symbol mean? AirlineTicket::AirlineTicket ()@PaulR Not everyone who arrives upon this question is looking to learn C++. I, for example, just happened to be skimming …

  6. What is the <=> ("spaceship", three-way comparison) operator in C++?

    Nov 24, 2017 · This is called the three-way comparison operator. According to the P0515 paper proposal: There’s a new three-way comparison operator, <=>. The expression a <=> b returns an …

  7. c++ - #include in .h or .c / .cpp? - Stack Overflow

    Jun 9, 2010 · 20 Put as many includes in your cpp as possible and only the ones that are needed by the hpp file in the hpp. I believe this will help to speed up compilation, as hpp files will be cross …

  8. c++ - What does the explicit keyword mean? - Stack Overflow

    33 Cpp Reference is always helpful!!! Details about explicit specifier can be found here. You may need to look at implicit conversions and copy-initialization too. Quick look The explicit specifier specifies …

  9. c++ - Inheriting constructors - Stack Overflow

    Constructors are not inherited. They are called implicitly or explicitly by the child constructor. The compiler creates a default constructor (one with no arguments) and a default copy constructor (one …

  10. How do I fix the error "was not declared in this scope"?

    This is similar to how one would write a prototype for functions in a header file and then define the functions in a .cpp file. A function prototype is a function without a body and lets the compiler know …