Resultado? Desglosar

Question

Int a=2, b, c;
b=++a;
c=++a;
a= b * c;
Cout << a;

Answer 1

You can try such things easily in the Code Playground.
Also print intermediate steps for more insight.

Since prefix ++a is used, you will increase a, THEN assign it to b, which will be 3.
In the next line a is increased again, then assigned, so c is 4.
Therefore b*c is 12, which is written on a and printed.

Answer 2

And replace line 3 by
c = ++b
What is result?