考题
以下程序的执行结果是【】。 include using namespace std; class base { public: virmal
以下程序的执行结果是【 】。include<iostream>using namespace std;class base{public:virmal void who(){cout<<"Base Class"<<endl;)};class Derivedl:public Base{public:virtual void who(){cout<<"Derivedl Class"<<endl;}};class derived2:public Base{public:virtual void who(){cout<<"Derived2 Class"<<endl;)};int main(int argc,char*argv[]){base obj1,*P;deliVedl obj2;derived2 obj3;p=obj1; p->who();p=obj2; p->who();p=obj3; p->who();return 0;}
考题
下列Java源程序结构中前三种语句的次序,正确的是A.import, package, public classB.import必为首,其他不限C.public class, import, packageD.package, import, public class
考题
下列程序的运行结果是【 】。 include class SomeClass { public: SomeClass(int va
下列程序的运行结果是【 】。include <iostream. h>class SomeClass{public:SomeClass(int value) { some_value=value;};void show_data(void) { cout<<data<<"<<~some_value<<endl; };static void set_data(int value) {data=value; }private:static int data;int some_value};int SomeClass::datavoid main(void){SomeClass my_class(1001),your_class(2002);your_class. set_data(4004);my_elass. show_data()}
考题
下列对Java源程序结构中前3种语句的次序,正确的是A.import,package,public classB.import必为首,其他不限C.public class,import,packageD.package,import,public class
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
有以下程序:include using namespace std;class Base{public:Base(){}virtual void w
有以下程序: #include <iostream> using namespace std; class Base { public: Base(){} virtual void who() { cout<<"Base Class"<<end1; } ~Base(){} }; class Derivel : public Base { public: void who() { cout<<"Derivel Class"<<end1; } }; class Derive2 : public Base { public: void who () { cout<<"Derive2 Class"<<end1; } }; int main () { Base *p; Derivel obj1; Derive2 obj2; p=obj1; p=obj2; p->who ( ); return 0; } 执行程序后的输出结果是( )。A.Base ClassB.Derivel ClassC.Derive2 ClassD.程序编译时出错
考题
对于一个Java源文件,包含三个顶级元素,它们正确的书写顺序是()。A.package,import,classB.class,import,packageC.import,package,classD.package,class,import
考题
5、下列选项中,可以导入指定包中所有类的是()A.package包名;B.package 包名.*;C.import 包名;D.import 包名.*;
考题
对于一个Java源文件,包含三个顶级元素,它们正确的书写顺序是()。A.class,import,packageB.import,package,classC.package,import,classD.package,class,import
考题
在一个Java源程序中,如果import语句、package语句、class语句都存在,则出现的次序应为()A.import先出现,package和class出现的次序随意B.class语句、import语句、package语句C.package语句、import语句、class语句D.package语句、class语句