Thread: return or exit

  1. #1
    Registered User ch4's Avatar
    Join Date
    Jan 2007

    return or exit

    #include <stdio.h>
    #include <stdlib.h>
    int main(void)
     float light[3][3];
     FILE *Input;
         Input = fopen("bunny2.mtl","rb");
          fprintf(stderr,"Cannot find bunny2.mtl file.\n");
          exit(-1);   //Exit
          return -1; //Exit
     return 0;
    In small programs like the above which is the best way to exit after an error ?
    return or exit() or it doesn't matter which one to choose ?

  2. #2
    The larch
    Join Date
    May 2006
    I would say, definitely return. It would seem that exit() means you are beginning to panick, and abort() means you are scared to death. In case of normal execution flow you should let the program terminate normally (return).
    I might be wrong.

    Thank you, anon. You sure know how to recognize different types of trees from quite a long way away.
    Quoted more than 1000 times (I hope).

  3. #3
    Registered User ch4's Avatar
    Join Date
    Jan 2007
    Thank you

  4. #4
    Registered User
    Join Date
    Nov 2008
    My computer
    Actually, when there is an error abort() is for panicking, my vote would be for exit().

  5. #5
    and the hat of sweating
    Join Date
    Aug 2007
    Toronto, ON
    If you're in the main() function what difference does it make? return, exit() & abort() will all end the program. exit() & abort() are only needed if you want to end the program from a function other than main() (or if you still have some cleanup to do that you registered with the atexit() function).
    "I am probably the laziest programmer on the planet, a fact with which anyone who has ever seen my code will agree." - esbo, 11/15/2008

    "the internet is a scary place to be thats why i dont use it much." - billet, 03/17/2010

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