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:
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 …
How to use the PI constant in C++ - Stack Overflow
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 a definition for …
What is the purpose of using #ifdef and #if in C++?
In my project code, I found that someone used #ifdef and #if in code. I would like to know what does purpose for using them? As my knowledge, it said to the preprocessor will not do anything inside...
Iterate through a C++ Vector using a 'for' loop - Stack Overflow
Oct 3, 2012 · I am new to the C++ language. I have been starting to use vectors, and have noticed that in all of the code I see to iterate though a vector via indices, the first parameter of the for loop is always
What's the difference between constexpr and const?
What's the difference between constexpr and const? When can I use only one of them? When can I use both and how should I choose one?
Visual Studio Code: How to configure includePath for better ...
Sep 17, 2017 · From the official documentation of the C/C++ extension: Configuring includePath for better IntelliSense results If you're seeing the following message when opening a folder in Visual …
c++ - How can I convert a std::string to int? - Stack Overflow
Nov 20, 2014 · I want to convert a string to an int and I don't mean ASCII codes. For a quick run-down, we are passed in an equation as a string. We are to break it down, format it correctly and solve the …
Different ways of initializing an object in c++ - Stack Overflow
Apr 12, 2018 · Entity ent4 = Entity(); ent4 is a proper version of ent2 case until C++11. Default constructor is invoked as part of value initialization. Its form allows to avoid an ambiguity solving …
How can I get the list of files in a directory using C or C++?
How can I determine the list of files in a directory from inside my C or C++ code? I'm not allowed to execute the ls command and parse the results from within my program.