postfix and prefix

Question

explain this in best and simple way
int a = 8 ;
int b = 7 ;
b = a++
cout <<++b;

Answer 1

b=a++
b equals to whatever a is
then a is incremented by 1 while b took it value before the increment happened.

cout << ++b;
output to screen, but first incrememt b by 1.

Answer 2

i agree with Burey