Unary Plus Operator: +
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

Unary Plus Operator: +

+ cast-expression

The result of the unary plus operator (+) is the value of its operand. The operand to the unary plus operator must be of an arithmetic type.

Integral promotion is performed on integral operands. The resultant type is the type to which the operand is promoted. Thus, the expression +ch, where ch is of type char, results in type int; the value is unmodified. See Integral Promotions for more information about how the promotion is done.

© 2015 Microsoft