The unpredictability of the order of Evaluation of Subexpressions

Question

#include <iostream.h>
main()
{
int n=5, x;
x=++n*--n;
cout<< "n = "<<n<<", x="<<x<<endl;
cout<<++n<<" "<<++n<<" "<<++n<<endl;
}

Answer 1

http://www.learncpp.com/cpp-tutorial/33-incrementdecrement-operators-and-side-effects/

Answer 2

yes, this is bad practise.

Answer 3

Multiple prefix, postfix operators used on a single variable between two sequence points would result in undefined behaviour. The end result is dependent on the compiler.

Answer 4

operator precedence comes into play then , remembering them will be a life saver.

c++ is good in this aspect , js gives weird output in more cases.

c++ precedence chart
http://en.cppreference.com/w/cpp/language/operator_precedence

Answer 5

I am unableto understand this. Can anyone help?