首页/ 题库 / [单选题]下面程序的运行结果为 #include 的答案

下面程序的运行结果为 #include < iostream.h > class A { static int n; public: A( ){n=1;} A(int num){ n = num;} void print( ){cout<< n;} }; int A::n=2; void main( ) { A a,b (3); a.print( ); b.print( ); cout<< end1; }

单选题
2022-02-28 13:42
A、11
B、13
C、23
D、33
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正确答案
D

试题解析
解析:本题考查的是静态数据成员的使用,n为类A的静态成员,即为类A的所有对象共有的成员,所以,当对象b把n初始化为3时,对象a的成员n的值也为3(这两个n实际上是同一个)。

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