• 2022-07-25 问题

    以下装箱、拆箱语句中,错误的有() A:  object obj=100;  int m=(int)obj; B:  object obj=100;  int m=obj; C:  object obj=(int)100;  int m=(int)obj; D:  object obj=(object)100;  int m=(int)obj;

    以下装箱、拆箱语句中,错误的有() A:  object obj=100;  int m=(int)obj; B:  object obj=100;  int m=obj; C:  object obj=(int)100;  int m=(int)obj; D:  object obj=(object)100;  int m=(int)obj;

  • 2021-04-14 问题

    写出下面程序的运行结果。 #include <iostream> using namespace std; class Base { public: void Who( ){cout<<"class Base"<<endl;} }; class Derived1:public Base { public: void Who( ){cout<<"class Derived1"<<endl;} }; class Derived2:public Base { public: void Who( ){cout<<"class Derived2"<<endl;} }; int main( ) { Base obj1,*p; Derived1 obj2; Derived2 obj3; p=& obj1; p->Who(); p=& obj2; p->Who(); p=& obj3; p->Who(); obj2.Who(); obj3.Who(); return 0; } ______ ______ ______ ______ ______

    写出下面程序的运行结果。 #include <iostream> using namespace std; class Base { public: void Who( ){cout<<"class Base"<<endl;} }; class Derived1:public Base { public: void Who( ){cout<<"class Derived1"<<endl;} }; class Derived2:public Base { public: void Who( ){cout<<"class Derived2"<<endl;} }; int main( ) { Base obj1,*p; Derived1 obj2; Derived2 obj3; p=& obj1; p->Who(); p=& obj2; p->Who(); p=& obj3; p->Who(); obj2.Who(); obj3.Who(); return 0; } ______ ______ ______ ______ ______

  • 2022-06-19 问题

    ‌以下哪条JS语句会产生运行错误?‎ A: var obj = {} ; B: var obj = () ; C: var obj = [] ; D: var obj = // ;

    ‌以下哪条JS语句会产生运行错误?‎ A: var obj = {} ; B: var obj = () ; C: var obj = [] ; D: var obj = // ;

  • 2022-07-22 问题

    返回对象obj在List集合中出现的位置索引的方法是哪个() A: intindexOf(obj) B: intget(obj) C: intindex(obj) D: intindexof(obj)

    返回对象obj在List集合中出现的位置索引的方法是哪个() A: intindexOf(obj) B: intget(obj) C: intindex(obj) D: intindexof(obj)

  • 2022-06-19 问题

    以下哪项可以实现对象的定义? A: var obj=[]; B: var obj={}; C: var obj=new Object(); D: var obj=123;

    以下哪项可以实现对象的定义? A: var obj=[]; B: var obj={}; C: var obj=new Object(); D: var obj=123;

  • 2021-04-14 问题

    2 Who are they ? (in English)

    2 Who are they ? (in English)

  • 2021-04-14 问题

    2 Answer the questions. One question has more than one answer. ► Who has to find the evidence? ~ The police 1 Who takes fingerprints? ________ 2 Who is charged? ________ 3 Who investigates the crime? ________ 4 Who is hurt by the crime? ________ 5 Who is caught? ________ 6 Who usually reports the crime? ________ 7 Who is arrested? ________ 8 Who sees the crime take place? ________

    2 Answer the questions. One question has more than one answer. ► Who has to find the evidence? ~ The police 1 Who takes fingerprints? ________ 2 Who is charged? ________ 3 Who investigates the crime? ________ 4 Who is hurt by the crime? ________ 5 Who is caught? ________ 6 Who usually reports the crime? ________ 7 Who is arrested? ________ 8 Who sees the crime take place? ________

  • 2022-06-19 问题

    调用对象obj函数成员fun:obj.fun( ); 编译器在编译时会将其调整为( )。 A: obj->fun( ); B: obj->fun( &obj ); C: fun( obj ); D: fun( &obj );

    调用对象obj函数成员fun:obj.fun( ); 编译器在编译时会将其调整为( )。 A: obj->fun( ); B: obj->fun( &obj ); C: fun( obj ); D: fun( &obj );

  • 2022-07-24 问题

    以下能够创建一个对象的是( )。 A: var obj=new Object( ) ; B: var obj=function(name){this.name=name ; }<br> var p1=new obj( "张三" ) ; C: var obj={ name : "张三" ; } D: var obj=Object.create( { name: "张三" } ) ;

    以下能够创建一个对象的是( )。 A: var obj=new Object( ) ; B: var obj=function(name){this.name=name ; }<br> var p1=new obj( "张三" ) ; C: var obj={ name : "张三" ; } D: var obj=Object.create( { name: "张三" } ) ;

  • 2021-04-14 问题

    下列程序输出的对象是()。 (function(obj) { console.log(obj); })(this);

    下列程序输出的对象是()。 (function(obj) { console.log(obj); })(this);

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