Returns the value of the main () function?

Question

Someone please tell me where the main () function of the "C" language returns its value?

Answer 1

Function

C mainreturns int ... that int goes into the executable (the parent process, if you do) as an exit status code.

In particular, in most operating systems, exit code 0 means a normal run (no real errors), and non-zero means that a problem has occurred and the program should exit abnormally.

Answer 2

The return value if the main () function is used as the program exit status code.

In the shell, you can get the program exit status with $ ?, example:

./prog
exit_status=$?

Answer 3

main libery, , . :

return my_return_value;

.

Answer 4

: .

main() , .

0

Answer 5

C99:

5.1.2.2.3

1 main , int, main exit , main ;

7.20.4.3 exit

5 , . EXIT_SUCCESS, . EXIT_FAILURE, . .

, main .