Operator priority

Question

how it works....
a=5;
a=a++*a++;
cout<<a;
a=5;
a=++a*++a;
cout<<a;
a=5;
a=++a*a++;
cout<<a;

Answer 1

It will produce undefined behaviour. ++ -- shouldn't be used more than once per sequence point

Answer 2

the first gives 30 as answer

Answer 3

its working...
we can use it in this way

Answer 4

i trust you. only i am asking...because my compiler gives me the result...my compiler name is c4droid.... and this question is asked in sololearn..

Answer 5

Well... if you don't trust me then go on and spam your increment/decrement operators. Have fun finding these bugs you will most likely produce if you do it.

http://en.cppreference.com/w/cpp/language/eval_order