All C++ programs require an entry point and the main function provides that entry point.
Every C plus plus program that is a main program must have the function 'main'.
There is no such thing. You probably meant the main function. The main function is the only function that is required as it serves as the entry point of the program.
It is the first function that gets called when the program is executed.
I don't think its possible. Every C++ program must at least have the main function.
An entry point, usually main().
The main function is the entry point of your application. Its primary purpose is to process command-line switches (if any) and to invoke the appropriate functions. For trivial applications the main function may be the only function, however separating blocks of code into re-usable functions make code much easier to read.
Caller and callee relate to function calls. The caller is the code point that made the call to a function while the function is the callee. The callee returns control to the caller via the return address that was pushed onto the stack by the caller. void foo() {} int main() { foo(); } In the minimal example above, the main function is the caller while the foo function is the callee.
If you declare a variable inside of any fuction (except main) it will not be available to other functions.
Random example, function with two parameters: int main (int argc, char **argv) {...}
Every C++ program must have a main() function that returns an integer:int main(){// user-code goes here....// Main must return an integer to the calling program.// A non-zero value usually indicates an error occurred but// the exact meaning of the return value is user-defined.return( 0 );}
None. PS: The most common headers files are probably: stdio.h stdlib.h string.h
That is not a function, although it does involve the function of addition. A function is something that is done to numbers.