The main function cannot be declared as static or inline. It also cannot be overloaded; there can be only one function named main in the global namespace. The main function cannot be used in your program: you are not allowed to call the main function from anywhere in your code, nor are you allowed to take its address. The return type of main ...

Oct 15, 2008 · 5.1.2.2.3 "If the return type of the main function is a type compatible with int, a return from the initial call to the main function is equivalent to calling the exit function with the value returned by the main function as its argument;11) reaching the } that terminates the main function returns a value of 0."

Dec 1, 2010 · int main() { auto f = []() { return 42; }; std::cout << "f() = " << f() << std::endl; } Here, f is a lambda object that acts as a local function in main. Captures can be specified to allow the function to access local objects. Behind the scenes, f is a function object (i.e. an object of a type that provides an operator()). The function object ...

From C++ standard docs 3.6.1 Main Function, A program shall contain a global function called main, which is the designated start of the program. It is implementation-defined whether a program in a freestanding environment is required to define a main function. So, it does depend on your compiler/linker...

Make a header file with all the function prototypes I used? And where should I place the .cpp and header file with all the actually functions? Is there a way I can call the directory of the functions file directly? I.e., I'm more thinking of having it in the same folder with the main source .cpp file to share with some of my colleagues.

Aug 9, 2011 · You can simply place a forward declaration of your second() function in your main.cpp above main(). If your second.cpp has more than one function and you want all of it in main(), put all the forward declarations of your functions in second.cpp into a header file and #include it in main.cpp. Like this-Second.h: void second(); int third ...

Oct 29, 2016 · It any function, all its variables are temporary and only accessible in this function's scope unless you use a pointer or a reference(c++ only) So what happen when you call your function is that a copy of number's is created into x. Also, the return statement of a function is used to... return values! Yeah, weird uh?

Dec 14, 2012 · The C and C++ standards require any program (for a “hosted” C or C++ implementation) to have a function called main, which serves as the program's startup function. The main function is called after zero-initialization of non-local static variables, and possibly but not necessarily (!, C++11 §3.6.2/4) this call happens after dynamic ...

Dec 25, 2011 · The problem is that I got a main.cpp not found error, and wasn't sure whether or not in C++ a file known as main.cpp is required, or can I have a file with a different title which contains the function main instead? Edit I should note that I have removed any specification to main and have recompiled this program.

Jan 4, 2014 · So, i'm learning by the online tutorial c++.com, and I'm on the "declaring functions" section right now. It says that the actual place of the main() function within the code doe'snt matter since main is always called first. So is it wrong that they say that because writing the moon_g() before the main seemed to make a difference. –