版本2和3间的区别
于2007-07-19 07:46:43修订的的版本2
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于2008-02-23 15:34:58修订的的版本3
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A.7.4.4 Unary Plus Operator

The operand of the unary + operator must have arithmetic type, and the result is the value of the operand. An integral operand undergoes integral promotion. The type of the result is the type of the promoted operand.

  • The unary + is new with the ANSI standard. It was added for symmetry with the unary -.

TCPL/A.07.04.4_Unary_Plus_Operator (2008-02-23 15:34:58由localhost编辑)

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