Answer 1

I got this from SO.

a = 4;
b = a++;
// first b will be 4(because a=b), and after this a will be 5(because of the ++, that is 4+1)
// now a value is 5

c = ++a;
// first a will be 6(because a has been incremented by++), that is, c = (+1+5) then 6 will be assigned to c