What is the main objective of a message that tells the receiver about a flew product tha
A.A. To inform
B.B. To request
C.C. To record
- · 有6位网友选择 B,占比75%
- · 有1位网友选择 A,占比12.5%
- · 有1位网友选择 C,占比12.5%
A.A. To inform
B.B. To request
C.C. To record
A.232
B.231
C.222
D.221
下面程序运行后,r的值是?() delegate int Call(int a, int b); static void Main(string[] args){ Call obj; obj = new Call(Add); obj += new Call(Sub); int r = obj (5, 3); } static int Add(int a,int b){return a+b;} static int Sub(int a,int b){return a-b;}
A、2
B、5
C、52
D、没有返回值
下列程序的执行结果是 () public class ex68{ public static void main(String[]args){ ex68 obj=new ex68(); int s=0; for(int i=1;i<=4;i++){ s+=obj.method(i); } System.out.println(s); } public int method(int n){ if(n==1) return 1; else return n*method(n-1); } }
A.3
B.9
C.33
D.153
include<iostream.h>
class A
{
public:
virtual void use() {cout<<"in A\n";}
};
class B:public A
{
public:
virtual void use() {cout<<"in B\n";}
};
class C:public B
{
public:
virtual void use(){cout$amp; };
void main()
{
A*obj;
bj=new C;
obj->use();
delete obj;
}
下列程序运行结果是 。 #include <iostream.h> class A { public: A() { cout << "A"; } }; class B { public: B() { cout << "B"; } }; class C : public A { public: C() { cout << "C"; } private: B b; }; void main() { C obj; }
有如下程序:#include <iostream>using namespace std;class Obj { static int i;public: Obj(){i++;} -Obj(){i--;} static int getVal(){return i;} };int Obj::i=0;void f(){Obj ob2; cout<<ob2.getVal(); }hat main(){ Obj ob1; f(); Obj *ob3=new Obj; cout<<ob3->getVal(); delete ob3; cout<<Obj:: getVal(); return (); }程序的输出结果是()。
A.232
B.231
C.222
D.221
A.0
B.1
C.2
D.3
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