// 声明 StudentCaculate 类是 Student 类的友元类// 在 StudentCaculate 类中可以访问 Student 类中的私有成员friendclassStudentCaculate; 在StudentCaculate 中 , 定义了 Student 类型成员变量 , 可以访问 Student 对象的所有成员 , 包括 私有成员 和 保护成员 ; 代码示例 : 代码语言:javascript 复制 #include"io...
extern, export 为了访问其他编译单元(如另一代码文件)中的变量或对象,对普通类型(包括基本数据类、结构和类),可以利用关键字extern,来使用这些变量或对象时;但是对模板类型,则必须在定义这些模板类对象和模板函数时,使用标准C++新增加的关键字export(导出/出口/输出)。 friend 声明友元,使其不受访问权限控制的限制。
The dictionary will be your good friend,we can learn better from it.I hope you'll use it as often as possible in your English learning.(1)How to know a new word according to this passage? DA.Ask the teacher for help.B.Find it out from a computer.C.Find...
Connie has long dark brown hair and her eyes are big and round.People say she is (1) and looks like a doll.When we go out,people often (2) that I am older than her because she is shorter and slimmer (苗条的). Connie is positive(乐观的)even when things go ...
A) imagining B) imitating C amazing D amusing E combating F diagnosed G) isolated H violated I)relaxed J)consent K) super L )supreme M)commit N )ignore O)creeps Dog lovers will be thrilled to tell you why dog is con side red as man‘s best friend : loy...
a篮子里有多少个苹果? How many apples in the basket has?[translate] ai know you are facing the problem on friend 我知道您在朋友面对问题[translate] a你妈妈中文不是很好 Your mother Chinese is not very good[translate] ain power save mode 在功率节省方式下[translate] ...
宁以non-member、non-friend 替换 member 函数(可增加封装性、包裹弹性(packaging flexibility)、机能扩充性) 若所有参数(包括被this指针所指的那个隐喻参数)皆须要类型转换,请为此采用 non-member 函数 考虑写一个不抛异常的 swap 函数 尽可能延后变量定义式的出现时间(可增加程序清晰度并改善程序效率) 尽量少做转型...
friend 友元类和友元函数能访问私有成员 破坏封装性 友元关系不可传递 友元关系的单向性 友元声明的形式及数量不受限制usingusing 声明一条using 声明 语句一次只引入命名空间的一个成员。它使得我们可以清楚知道程序中所引用的到底是哪个名字。如:using namespace_name::name;...
18.Last year.my friend and I went to a nearby town to attend a wedding.After the reception.we were(41)Cfor a bus to go back home.It was nine o'clock at night.and although many buses(42)D.none stopped.We waited for one hour and were getting(43)A.We c