[c++] What is the proper declaration of main in C++?

Details on return values and their meaning

Per 3.6.1 ([basic.start.main]):

A return statement in main has the effect of leaving the main function (destroying any objects with automatic storage duration) and calling std::exit with the return value as the argument. If control reaches the end of main without encountering a return statement, the effect is that of executing

return 0;

The behavior of std::exit is detailed in section 18.5 ([support.start.term]), and describes the status code:

Finally, control is returned to the host environment. If status is zero or EXIT_SUCCESS, an implementation-defined form of the status successful termination is returned. If status is EXIT_FAILURE, an implementation-defined form of the status unsuccessful termination is returned. Otherwise the status returned is implementation-defined.

Examples related to c++

Method Call Chaining; returning a pointer vs a reference? How can I tell if an algorithm is efficient? Difference between opening a file in binary vs text How can compare-and-swap be used for a wait-free mutual exclusion for any shared data structure? Install Qt on Ubuntu #include errors detected in vscode Cannot open include file: 'stdio.h' - Visual Studio Community 2017 - C++ Error How to fix the error "Windows SDK version 8.1" was not found? Visual Studio 2017 errors on standard headers How do I check if a Key is pressed on C++

Examples related to function

$http.get(...).success is not a function Function to calculate R2 (R-squared) in R How to Call a Function inside a Render in React/Jsx How does Python return multiple values from a function? Default optional parameter in Swift function How to have multiple conditions for one if statement in python Uncaught TypeError: .indexOf is not a function Proper use of const for defining functions in JavaScript Run php function on button click includes() not working in all browsers

Examples related to standards

What are the new features in C++17? Does JSON syntax allow duplicate keys in an object? Use CSS to automatically add 'required field' asterisk to form inputs Is unsigned integer subtraction defined behavior? What is the standard naming convention for html/css ids and classes? Spaces in URLs? Is an anchor tag without the href attribute safe? Set element width or height in Standards Mode What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__? What is the proper declaration of main in C++?

Examples related to main

String method cannot be found in a main class method How to access global variables Maven Error: Could not find or load main class Eclipse error "Could not find or load main class" Error: Main method not found in class Calculate, please define the main method as: public static void main(String[] args) What does "Could not find or load main class" mean? C# importing class into another class doesn't work In Python, can I call the main() of an imported module? Can there exist two main methods in a Java program? Could not find or load main class with a Jar File

Examples related to c++-faq

What are the new features in C++17? Why should I use a pointer rather than the object itself? Why is enum class preferred over plain enum? gcc/g++: "No such file or directory" What is an undefined reference/unresolved external symbol error and how do I fix it? When is std::weak_ptr useful? What XML parser should I use in C++? What is a lambda expression in C++11? Why should C++ programmers minimize use of 'new'? Iterator invalidation rules