有如下程序: include using namespace std; class TestClass { int a 有如下程序: #include<iostream> using namespace std; class TestClass { int a; public: TestClass(int x){a=x;} void show(){cout<<a;} }; class TestClass1:public TestClass { int b; public: TestClass1(int i):TestClass(i+1),b(i){} void show(){cout<<b;} }; int main() { TestClass b(5),*p; TestClass1 d(1); p=d; p->show(); return 0; } 该程序运行后的打印结果是( )。A.5B.1C.0D.2

有如下程序: include using namespace std; class TestClass { int a

有如下程序: #include<iostream> using namespace std; class TestClass { int a; public: TestClass(int x){a=x;} void show(){cout<<a;} }; class TestClass1:public TestClass { int b; public: TestClass1(int i):TestClass(i+1),b(i){} void show(){cout<<b;} }; int main() { TestClass b(5),*p; TestClass1 d(1); p=&d; p->show(); return 0; } 该程序运行后的打印结果是( )。

A.5

B.1

C.0

D.2


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有如下程序: include using namespace std; class TestClass{ int k; public: TestCla 有如下程序:include<iostream>using namespace std;class TestClass{int k;public:TestClass(int x=1):k(x){}~TestClass O{cout<<k;}};int main(){TestClass a[]={TestClass(3),TestClass(3),TestClass(3)};TestClass *p=new TestClass[2];delete []p;return ():}这个程序的输出结果是______。

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有如下的程序: include using namespace std; class AT{friend ostream operato 有如下的程序:include<iostream>using namespace std;class AT{friend ostream operator<<(ostream,AT);}at;ostream operator<<(ostream os,AT){return os<<'@';}int main(){cout<<"MyHome"<<at<<"isHere.com";}执行上面的程序将输出

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