下面程序的结果是 #include<iostream.h> class A { int a; public: A():a(1){} void showa(){cout<<a;} }; class B { int a; public: B():a(2){} void showa(){cout<<a;} }; class C:public A,public B { int a; public: C():a(3) ㈠ voidshowa(){cout<<a;} }; voidmain() { C c; c.showa(); }
A.1
B.2
C.3
D.程序有错误
第1题:
下面程序的结果是( )。 #include<iostream.h> class A { int a; public: A():a(1){} void showa(){cout<<a;} }; Class B { int a; public: B():a(2){} void showa(){cout<<a;} ); class C:public A,public B { int a; pu
A.1
B.2
C.3
D.程序有错误
第2题:
下面程序的结果是 #include<iostream.h> class A { int a; public: A( ):a(1){} void showa( ){cout<<a;} }; class B { int a; public: B( ) :a(2) {}
A.1
B.2
C.3
D.程序有错误
第3题:
下面程序的运行结果是 #include<iostream.h> class base{ protected: int a; public: base( ){cout<<"0";} }; class basel:virtual base { public: base1( ){cout<<"1";} }; class base2:virtual base{ public:
A.123
B.3120
C.312
D.3012
第4题:
下列程序的运行结果是______。
include<iostream.h>
class Base
{
public:
void f(int x){cout<<“Base:”<<x<<endl;}
);
class Derived:public Base
{
public:
void f(char*str){cout<<“Derived:”<<str<<endl;}
};
void main(void)
{
Base*pd=ne
第5题:
下面程序的结果是 #include<iostream.h> class A { int a; public: A( ) :a(1) {} void showa ( ) {cout < < a;} }; class B { int a; public: B( ) :a(2) {} void showa( ) {cout < < a;} }; class C: public A, public B { t a; public: C( ) :a(3) {} void showa( ) {cout < < a;} }; void main( ) { C c; c.showa( ) ; }
A.1
B.2
C.3
D.程序有错误
第6题:
下面程序的结果是 #include<iostream.h> class A { public: A( ) {cout<<"construtA"<<endl;} virtual~A( ) {cout<<"destructA"<<endl;}}; class B:public A {}; class C:public A {}; c
A.constructA destructA
B.constructA constructA destructA destructA
C.constructA constructA constructA destructA destructA destructA
D.constructA onstructA constructA constructA destructA destructA destructA destructA
第7题:
下面程序的运行结果是( )。 #include<iostream.h> class base{ protected: int a; public: base(){cout<<“0”;} }; Class basel:Virtual base{ public: basel(){cout<<“1”;} }; Class base2:virtual base{ public: base2(){cout<<“2”;)
A.0123
B.3120
C.0312
D.3012
第8题:
下面程序运行时输出结果为【 】。
include<iostream.h>
include<malloc.h>
class Rect
{
public:
Rect(int1,int w)(length=1;width=w;)
void Print(){cout<<"Area:"<<length *width<<endl;)
void *operator new(size-t size){return malloc(size);}
void operator delete(void *p){free(p)
private:
int length,width;
};
void main()
{
Rect*p;
p=new Rect(5,4);
p->Print();
delete p;
}
第9题:
下列程序的运行结果是【 】。
include <iostream. h>
class SomeClass
{
public:
SomeClass(int value) { some_value=value;};
void show_data(void) { cout<<data<<"<<~some_value<<endl; };
static void set_data(int value) {data=value; }
private:
static int data;
int some_value
};
int SomeClass::data
void main(void)
{
SomeClass my_class(1001),your_class(2002);
your_class. set_data(4004);
my_elass. show_data()
}