对于类定义 class A{public： void func2(){} }； class B：public A{ public： w)id funcl()| cout<<"class B func l”<<endl：}virtual voiIl fimc2(){cout<<"class B func 2" <<endl：}}；下面正确的叙述是( )。 -题库考试答案搜索网

对于类定义 class A{
public：
void func2(){}
}；
class B：public A{ public：
w)id funcl()| cout<<"class B func l”<<endl：}
virtual voiIl fimc2(){cout<<"class B func 2" <<endl：}
}；
下面正确的叙述是( )。

单选题

2022-03-03 18:13

A、A：：rune2()和B：：funcl()都是虚函数
B、A：：func2()和B：：funel()都不是虚函数
C、B：：funcl()是虚函数，而A：：func2()不是虚函数
D、B：：funcl()不是虚函数，而A：：func2()是虚函数

查看答案

正确答案

试题解析

基类中说明的虚函数，在派生类中自然就是虚函数，所以类B中funcl()是虚函数；而类A中的func2没有被关键字virtual修饰，所以不是虚函数。

标签：计算机二级ＩＴ认证

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对于类定义 class A{public： void func2(){} }； class B：public A{ public： w)id funcl()| cout<<"class B func l”<<endl：}virtual voiIl fimc2(){cout<<"class B func 2" <<endl：}}； 下面正确的叙述是( )。

对于类定义 class A{
public：
void func2(){}
}；
class B：public A{ public：
w)id funcl()| cout<<"class B func l”<<endl：}
virtual voiIl fimc2(){cout<<"class B func 2" <<endl：}
}；
下面正确的叙述是( )。