undefined « compile « C Q&A

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C Q&A » compile » undefined 

1. What are the common undefined/unspecified behavior for C that you run into?    stackoverflow.com

An example of unspecified behavior in the C language the the order of evaluation of arguments to a function. It might be left to right or right to left, you ...

2. When is "undefined" fatal or just warning?    stackoverflow.com

test.c(6) : warning C4013: 'add' undefined; assuming extern returning int
I've encountered many times when an undefined function will report an error,thus stopping the building process. Why this time just a warning?

3. Aren't unspecified and undefined cases handled similarly by the compiler    daniweb.com

In undefined cases, anything can happen, the program can crash, or unexpected results be thrown up. What happens is up to the compiler. In unspecified cases, the Standard has deliberately not defined the exact behaviour of a few things so that the compiler is at liberty to do as it deems efficient. In both the cases, what happens is up to ...

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