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++ code file extension? What is the difference between .cc and …
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 …
c++ - What does the explicit keyword mean? - Stack Overflow
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 operators as well. …
Why are #ifndef and #define used in C++ header files?
I have been seeing code like this usually in the start of header files: #ifndef HEADERFILE_H #define HEADERFILE_H And at the end of the file is #endif What is the purpose of this?
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++ - Undefined reference to vtable - Stack Overflow
12 The GNU C++ compiler has to make a decision where to put the vtable in case you have the definition of the virtual functions of an object spread across multiple compilations units (e.g. …
Check if a string contains a string in C++ - Stack Overflow
Feb 26, 2010 · I have a variable of type std::string. I want to check if it contains a certain std::string. How would I do that? Is there a function that returns true if the string is found, and …
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 …
Callback functions in C++ - Stack Overflow
In C++, when and how do you use a callback function? Also, how do you write one?
What is the C++ function to raise a number to a power?
Dec 18, 2023 · In C++ the "^" operator is a bitwise XOR. It does not work for raising to a power. The x << n is a left shift of the binary number which is the same as multiplying x by 2 n number …