14.2.3 Unary operator overload resolution

An operation of the form op x or x op, where op is an overloadable unary operator, and x is an expr

An operation of the form x op y, where op is an overloadable binary operator, x is an expression of

Overload resolution is a compile-time mechanism for selecting the best function member to invoke gi

运算符重载是c++的又一个先进功能。它使用户可以对自己定义的对象使用运算符像对int、float使用一样方便、简洁、形象，增加程序的可读性。重载运算符既可以用友元函数，也可以用成员函数。推荐使用成员函

For an operation of the form ?x, unary operator overload resolution (?4.2.3) is applied to select a

For an operation of the form x - y, binary operator overload resolution (?4. 2.4) is applied to sele

For an operation of the form x * y, binary operator overload resolution (?4. 2.4) is applied to sele

For an operation of the form x + y, binary operator overload resolution (?4. 2.4) is applied to se

The ?: operator is called the conditional operator. It is at times also called the ternary operator

For an operation of the form x + y, binary operator overload resolution (?4. 2.4) is applied to sele