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According to me C program should execute sequentially. I am referring to one of the standard C example projects developed by the micro controller chip manufacturers, i see in some of the functions where it sometimes executes the previous lines of code.
It executes Statement2 and normally should execute statement3 but it executes statement1 and then comes back to statement3.Code:Ex:
void func1(void)
{
Line1: Statement 1
Line2: Statement 2
Line3: Statement 3
}
How is it possible? Please advise.
Perhaps you should post the actual example. In your overly simplified example, it looks either impossible, or perhaps you're missing an obvious goto or something.
You sometimes see weird stuff happening if you're trying to single step the code in a debugger.
Why is it so ? And how shall i proceed ? Can i just neglect and proceed ? Please advise.
It isn't so. (EDIT: Unless you're referring to Salem's comment about single-stepping; if you have your optimization on high enough, and you have a fancy enough compiler, it might be able to determine that (a) the two lines are "independent" enough that they can be done in either order and (b) it is faster to do line two before line one.)Quote:
Originally Posted by Satya
What are you seeing that makes you think it is happening? Be as specific as possible. (Are you in the debugger? Are you watching LEDs being lit up by your chip?Quote:
Originally Posted by Satya