考题
有下列程序:include using namespace std; class TestClass1 { public: TestClass1(){
有下列程序:include<iostream>using namespace std;class TestClass1{public:TestClass1(){cout<<"A";}};class TestClass2<public:TestClass2(){cout<<"B";}};class TestClass3:public TestClass1{TestClass2 b;
考题
执行这个程序的输出结果是(); include using namespace std; class TestClass1 { publ
执行这个程序的输出结果是( );include<iostream>using namespace std;class TestClass1{public:void fun1(){cout<<"TestClass1\n";}virtual void fun2(){cout<<"TestClass1\n";}};class TestClass2:public TestClass1{public:void fun1(){cout<<"TestClass2\n";}void fun2(){cout<<"TestClass2\n";}};void f(TestClass1b){b.fun1();b.fun2();}int main(){TestClass2 obj;f(obj);return 0;}
考题
有如下程序:includeusing namespace std;class TestClass1{public:virtual void fun(
有如下程序: #include<iostream> using namespace std; class TestClass1 { public: virtual void fun(){cout<<"1";} }; class TestClass2: public TestClass1 { public: TestClass2(){cout<<"2";} }; class TestClass3:public TestClass2 { public: virtual void fun(){TestClass2::fun();cout<<"3";} }; int main() { TestClass 1 aa,*p; TestClass2 bb; TestClass3 cc; p=cc; P->fun(); return 0; } 执行上面程序的输出是( )。A.1122B.2112C.2213D.2223
考题
有如下程序:includeusing namespace std;class TestClass1{public:TestClass1 (){cou
有如下程序: #include<iostream> using namespace std; class TestClass1 { public: TestClass1 (){cout<<"TestClass1";} ~TestClass1 (){cout<<"~TestClass1";} }; class TestClass2:public TestClass1 { TestClass1 *p; public: Testclass2(){cout<<"TestClass2";p=new TestClass1();} ~TestClass2(){cout<<"~TestClass2";delete p;} ); int main() { TestClass2 obj; return 0; } 执行这个程序的输出结果是( )。A.TestClass2TestClass1TestClass1~TestClass1~TestClass2~TestClass1B.TestClass1TestClass2TestClass1~TestClass2~TestClass1~TestClass1C.TestClass2TestClass1TestClass1~TestClass2~TestClass1~TestClass1D.TestClass1TestClass2TestClas1~TestClass1~TestClass2~TestClass1
考题
以下程序的执行结果是______。 include class A{ int a: public: void seta(int x) {
以下程序的执行结果是______。include<iostream.h>class A{int a:public:void seta(int x) {a=x;}void showa() {cout<<a<<end1;}};class B{int b;public:void setb(int x) {b=x;}void showb(){cout<<b<<end1;}};
考题
执行下列程序的输出结果是______: include using namespace std; class TestClass1 {
执行下列程序的输出结果是______:include<iostream>using namespace std;class TestClass1{public:void fun1(){cout<<"TestClass1\n";}virtual void fun2(){cout<<"TestClass1\n";}};class TestClass2:public TestClass1{public:void fun1(){cout<<"TestClass2\n";}void fun2(){cout<<"TestClass2\n";}};void f(TestClass1b)<b.fun1();b.fun2();}int main(){TestClass2 obj;f(obj);return 0;}
考题
以下程序的执行结果是______。 include class base { public: virtual void who(){c
以下程序的执行结果是______。include<iostream.h>class base{public:virtual void who(){cout<<"base class"<<endl:}};class derrvel:public base{public:void who(){cout<<"derivel class"<<endl:}};class derive2;public base{public:void who() {cout<<"derive2 class"<<endl;}};void main(){base obj1,*P;derive1 obj2;derive2 obj3:p=obj1;p->who();p=obj2:p->who();p=obj3;p->who();}
考题
以下程序的执行结果是______。 include class CSample{ private: int n; static int
以下程序的执行结果是______。include<iostream.h>class CSample{private:int n;static int k:public:CSample (int i) {n=i;k++;};voiddisp();} ;void CSample::disp(){cout <<"n="<<n<<",k="<<k<<endl}int CSample:
考题
若有以下程序: include using namespace std; class TestClass 1 { public: TestClass
若有以下程序:include<iostream>using namespace std;class TestClass 1{public:TestClass1(){X=0;}int x;};class TestClass2:virtual public TestClass1{public:TestClass2(){x=10;}};class TestClass3:virtual public TestClass 1{public:TestClass3(){x=20;}};class TestClass4:public TestClass2, protected TestClass3{ };int main(){TestClass4 obj;cout<<obj.x<<end1;return 0:}该程序运行后的输出结果是______。