Important rules for the conditional operators - && and ||

Operator && returns true if both operands are true, false otherwise. Operator || returns false if both operands are false, true otherwise. The important thing to note about these operators is that they are short-circuited. This means that the left operand is evaluated before the right operator. If the result of the operation can be evaluated after computing the left operand, then the right side is not computed. In this respect these operators are different from their bit-wise counterparts - bit-wise and (&), and bit-wise or (|). The bit-wise operators are not short-circuited. This means both the operands of bit-wise operator are always evaluated independent of result of evaluations.