if a=5,b=9,then find the value of a+=++a+--b +a

Question

so cna you explain this question

Answer 1

Modification of operand(s) involved in an expression to be evaluated leads to undefined behaviour. The standards doesn't dictate how an evaluation order should perform. That means output is unpredictable, and *may* differ from one compiler to another.

You should see a warning about sequence point issue about that snippet you have if you run it in modern compilers.

https://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points

You could check for yourself whether the answer given by Sam was correct, and do so in multiple compilers to see, whether any warning was thrown.

P.S. Please use the tags appropriately ...

https://code.sololearn.com/W3uiji9X28C1/?ref=app

Answer 2

You might be interested in this thread – the answer may not only depend on compilerbutalso on programminglanguage:
https://www.sololearn.com/Discuss/2882645/?ref=app

Answer 3

Thanks Sma

Answer 4

Sam

Answer 5

a = a + (++a)+(--b)+a
= 5 + 6 + 8 + 5
= 24