Who calls the main() function ?

Answer 1

The operating system which executes the program.

https://www.quora.com/Who-calls-the-main-function-in-C-C++-and-what-are-the-roles-of-C-C++-runtime-environment-during-the-life-cycle-of-C-C++-program-Is-it-possible-to-write-a-C-C++-program-without-the-main-function-If-yes-then-how

Answer 2

Please know that compiler is just a tool,
It cant pass instruction on its own!!!
operating system only does those things

Answer 3

the compiler or interpreter.

Answer 4

compiler

Answer 5

The operating system itself calls the main function after initializing of non local objects and it is the entry point to the program

Answer 6

@ aklex
then can you explain how the program runs in cmd / terminal?

Answer 7

COMPILER

Answer 8

compiler acts as the intermediator for the os and our program
when a file is started to run the os calls the main function through compiler

Answer 9

To the people saying the operating system calls it, you are mistaken! The compiler does. Before main the compiler inserts runtime checks and prepares your application, then calls your main function. The operating system is only responsible for loading your program into memory and calling the actual part that is placed by your compiler. Not setting up the runtime a language needs and calling main directly