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C: How to compile the code if my file is not having main function?

+2 votes
C: How to compile the code if my file is not having main function?
posted Nov 27, 2014 by anonymous

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1 Answer

+1 vote
  printf("hello world\n");

while compiling;
cc main.c -nostartfiles

answer Nov 28, 2014 by Chirag Gangdev
Hi Chirag,
This code would crash unless you use an exit(0) at the end.

0 / EXIT_SUCCESS are the values specified by the standard to indicate successful termination.

I am not sure exactly why a crash is observed. But if you use an exit(0), the program terminates normally.

Can anyone shed some light on as to why a crash is observed in the absence of exit(0) in this code?
Ok.... Thankx
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+2 votes

We have a big bunch of C and C++ code in our product and compile main with g++, because I read in

that this is needed.

Can we get rid of this condition? For example by not using exceptions, which are not caught and not using global/static non pod variables and not using class wide non pod variables?

I tried to find answers to that, but didn't find anything. Most people don't seem to be aware of that "compile main with c++-compiler" rule. If I missed some resource, please excuse.

+1 vote

I know the basic definition of re-entrant code and but don't known when it is really required ?

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