Q: What is a friend?
Q: Do friends violate encapsulation?
Q: What are some advantages/disadvantages of using friend functions?
Q: Should my class declare a member function or a friend function?
Q: How can I provide printing for my class Fred?
Q: But shouldn't I always use a printOn() method rather than a friend function?
Q: How can I provide input for my class Fred?
Q: How can I provide printing for an entire hierarchy of classes?
function get_friends(A) 能得到A的所有朋友，求get_friends_of_friends...
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Dear friends of zhengzhou international friends home, Goo...
The friends you have then may not be your friends forev...
Friends, My friends, or by other words I should call you，...
Ranking Friends Friends online Online Offline In Game Inv...
People have met different friends all their lives Friends...
by Benjamin Friends can play together.Friends depend on e...
friends: 普通朋友：regular friends 沙漠：desert 甜点：dessert playin...
参考： friends-dont-let-friends-render-offscreen ios-renderi...
本文标题：Friends
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