C++: Basic Concepts: Hello, World!: Main

Main
Program execution begins with the main function, int main. Curly brackets { } indicate the beginning and end of a function, which can also be called the function's body. The information inside the brackets indicates what the function does when executed.
 * #include
 * using namespace std;
 * int main
 * cout << "Hello World!";
 * return 0;
 * }
 * return 0;
 * }

Note: The entry point of every C++ program is main, irrespective of what the program does.