60.Public pathways are created for people to__________

下列程序运行结果是（ ）public class demo { public static void main(String[] args) { int x=30; int[] numbers=new int[x]; x=60; System.out.println(numbers.length); }} A: 60 B: 50 C: 30 D: 20

中国大学MOOC: 下列程序运行结果是（ ）public class demo { public static void main(String[] args) { int x=30; int[] numbers=new int[x]; x=60; System.out.println(numbers.length); }}

【单选题】对于下面定义的类A在函数f()中将对象成员n的值修改为60的语句应该是()classA{public:A(intx){n=x;}voidSetNum(intn1){n=n1;}private:intn;}intf(){A*ptr=newA(6);} A. A(60) B. SetNum(60) C. ptr->SetNum(60) D. ptr->n=60

Which two allow the class Thing to be instantiated using new Thing（）？ A:  public class Thing { } B:  public class Thing { public Thing（） {} } C:  public class Thing { public Thing（void） {} } D:  public class Thing { public Thing（String s） {} } E:  public class Thing { public void Thing（） {} public Thing（String s） {} }

Except __________, there are three public utilities. A: public water service B: public gas service C: public heat service D: public electricity service

阅读以下程序class A{protected: int a=0;public: A(){a=1;}};class B:virtual public A{public: B(){a++;}};class C:virtual public A{public: C(){a+=2;}};class D:public B,public C{public: void print(){ cout< A: 0 B: 1 C: 3 D: 4

_______ are similar to Bank holidays in England, which are established by law. A: Public Festivals B: Public celebrations C: Public holidays D: Public activities

() the truth, I don't like to be laughed at (). A: Tell; public B: To tell; in public C: Telling; in public D: I tell; the public

【单选题】对于下面()类定义,可以通过“new J_Class()”生成类 J_Class 的实例对象。 A. public class J_Class { public J_Class(void) { } } B. public class J_Class { } C. public class J_Class { public J_Class(String s) { } } D. public class J_Class { public void J_Class() { } public J_Class(String s) { } }