what is the use of 'return 0' in C

Question

Why do we have to use 'return 0' statement in C? in the end of main function. I know This means all things are going on way. But what does it mean? What exactly are there at the background of this ?

Googling your exact title gives: 'About 327,000,000 results'. Is one of those any use? — Martin James, Feb 15 '16 at 13:33
If you really want to know the answer, install Linux and start writing shell scripts. Write scripts that have conditionals (i.e. "If that program executed successfully, then execute this other one") You'll find out real quick how useful that "return 0" is. — Gillespie, Feb 15 '16 at 16:57

score 2 · Answer 1 · edited May 23 '17 at 12:31

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It returns a number to the environment that started it... Every process begins with a set of arguments and returns an int indicating success or failure

see So what does "return 0" actually mean?

edited May 23 '17 at 12:31

Community

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answered Feb 15 '16 at 13:32

WhiZTiM

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score 1 · Answer 2 · answered Feb 15 '16 at 13:32

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Potentially, a calling process can read the result and use it as information on what the execution of the program did.

answered Feb 15 '16 at 13:32

Codor

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what is the use of 'return 0' in C

2 Answers2