The ++ and -- Operators

• There are two special operators in c/c++
• And they are where c++ gets part of its name.
• ++ is the increment operator
  • a++;
  • Equivalent to a = a + 1;
• -- is the detriment operator.
  • a--;
  • Equivalent to a = a - 1;
• These can be used in two ways
  • prefix ++a;
  • postfix a++;
• Write a program to explore the difference.
• This is only a problem when these operators are used in complex statements
• i= i++ + ++i - ++i

Operator Assignment

• For most operators, you can also do a compound assignment.
• The form is var op= expression.
• a += 5
• This is the same as a = a + 5
• Or in general lhs op= rhs is the same as lhs = lhs op rhs;