判断下面程序编译是否正确,如果错误简要说明原因 class A { public: A(){}; private: A(A); }; A fun() { A a; return a; }

判断下面程序编译是否正确,如果错误简要说明原因 class A { public: A(){}; private: A(A&); }; A fun() { A a; return a; }


参考答案和解析
#define b 2 int x = b; void main() { x++; }

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执行以下代码后,下面哪些描述是正确的() public  class  Student{  private String name = “Jema”;  public void setName(String name){  this.name = name;  }  public String getName(){  return this.name;  }  public static void main(String[] args){  Student s;  System.out.println(s.getName()); } }A、输出nullB、第10行编译报错C、第11行编译报错D、输出Jema

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单选题public class Employee{       private String name;  public Employee(String name){           this.name = name;      }  public String getName(){         return name;      } }  public class Manager extends Employee{       private String department;  public Manager(String name,String department){          this.department = department;          super(name);  System.out.println(getName());      }  }  执行语句new Manager(“smith”,”SALES”)后程序的输出是哪项?()A smithB nullC SALESD 编译错误

单选题public class Employee{   private String name;   public Employee(String name){   this.name = name;  }   public String getName(){   return name;  }  }   public class Manager extends Employee{   public Manager(String name){   System.out.println(getName());  }  }   执行语句new Manager(“smith”)后程序的输出是哪项?()A smithB nullC 编译错误D name

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