Using :: (scope resolution operator) in C++ - Stack Overflow
I am learning C++ and I can never tell when I need to use :: . I do know that I need to use std:: in front of cout and cin. Does this mean that inside of the iostream file the developers that creat...
What does '&' do in a C++ declaration? - Stack Overflow
The & operator does the same thing in C and C++: it takes the address of an object. The & in a function prototype is not an operator. I'll fix the title.
c++ - Difference between | and || , or & and && - Stack Overflow
Dec 28, 2015 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …
What is the meaning of prepended double colon - Stack Overflow
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 …
What is the <=> ("spaceship", three-way comparison) operator in …
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 …
c++ faq - When do I use a dot, arrow, or double colon to refer to ...
Feb 13, 2011 · The three distinct operators C++ uses to access the members of a class or class object, namely the double colon ::, the dot ., and the arrow ->, are used for three different …
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 …
.c vs .cc vs. .cpp vs .hpp vs .h vs .cxx - Stack Overflow
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...
c++ - Why have header files and .cpp files? - Stack Overflow
Dec 2, 2008 · This is the best part of c++ separating interface from implementation. It's always good rather than keeping all the code in the single file, we have interface separated. Some …
how does the ampersand(&) sign work in c++? - Stack Overflow
Possible Duplicate: What are the differences between pointer variable and reference variable in C++? This is confusing me: class CDummy { public: int isitme (CDummy& param); }; int …