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知名公司笔试题目

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知名公司笔试题目

1:In Object Oriented Programming, how would you describe encapsulation?

conversion of one type of object to another.

runtime resolution of method calls.

exposition of data.

separation of interface and implementation.

2:如下程序的运行结果是:public abstract class A{public A(){eLine(''A'');}public virtual void Fun(){eLine("()");}}public class B: A{public B(){eLine(''B'');}public new void Fun(){eLine("()");}public static void Main(){A a = new B();();}}

A.A B ()

B.A B ()

C.B A ()

D.B A ()

3:Which of these string definitions will prevent escaping on backslashes in C#?

ng s = #”n Test string”;

ng s = “’n Test string”;

ng s = @”n Test string”;

ng s = “n Test string”;

4:假定a和b为int型变量,则执行下述语句组后,b的值为a=1;b=10;do{b-=a;a++;} while (b--<0);

A.9

B.-2

C.-1

D.8

5:abstract class BaseClass{public virtual void MethodA(){eLine("BaseClass");}public virtual void MethodB(){}}class Class1: BaseClass{public void MethodA(){eLine("Class1");}public override void MethodB(){}}class Class2: Class1{new public void MethodB(){}}class MainClass{public static void Main(string[] args){Class2 o = new Class2();odA();}}请问,此程序输出结果是:

Class

Class Class1

s1

s1 BassClass