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C++ In a Nutshell
book

C++ In a Nutshell

by Ray Lischner
May 2003
Intermediate to advanced content levelIntermediate to advanced
808 pages
32h 24m
English
O'Reilly Media, Inc.
Content preview from C++ In a Nutshell

Name

or operator — Logical or operator

Synopsis

               logical-or-expr := logical-or-expr "||" logical-and-expr | 
    logical-or-expr or logical-and-expr
            

The logical or operator converts its operands to type bool and returns a bool result. This built-in operator is a short-circuit operator, so if the left operand is true, the expression yields true without evaluating the right operand. Note that if operator or is overloaded, it cannot be short-circuited and must evaluate both operands.

The keyword or is interchangeable with the || token.

Example

int* p;
if (p == NULLor *p == 0)
  skip(  );

See Also

and, bitor, bool, expression, not, Chapter 3, <ciso646>

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Publisher Resources

ISBN: 059600298XSupplemental ContentErrata Page