Arithmetic operators
Example
 Shorthand operations are usually very efficient and they
can be combined with another expression.
X = A * B++; is equivalent to     X = A * B;
                  B = B+1;
X = A * ++B; is equivalent to     B=B+1;
                  X=A*B;
X = --C * (A + B); is equavalent to    C = C – 1;
                       X = C * (A + B);
X = C-- * (A + B); is equavalent to        X = C * (A + B);
                C = C – 1;