更多"如下程序的输出结果是 #include<iostream> u"的相关试题:
[单项选择]如下程序的输出结果是
#include<iostream>
using namespace std;
class MyClass
public:
MyClass(int i=0)cout<<1;
MyClass(const MyClass&x)cout<<2;
;
int main( )
MyClass objl(1),obj2(2),ohj3(objl);
return 0;
A. 112
B. 111
C. 121
D. 113
[单项选择]如下程序的输出结果是 #include<iostream> using namespace std; class A{ public: virtual void f( ){tout<<1;} void g( ){cout<<2;} }; class B:public A{ public: virtual void f( ){cout<<3;} void g( ){cout<<4;} }; void show(A&A) {a.f( );a.g( );} int nlain( ){ B b; show(B) ; return 0; }
A. 12
B. 34
C. 14
D. 32
[单项选择]如下程序运行时的输出结果是 #include<iostream> using namespace std; class ONE{ int c; public: ONE( ):c(0){eout<<1;} ONE(int n):C(n){cout<<2;} }; class TW0{ ONE onel; ONE one2; public: TWO(int m):one2(m){eout<<3;} }; int main( ){ TWO t(4); return 0; }
A. 3
B. 23
C. 123
D. 213
[单项选择]下列程序的输出结果是
#include" iostream"
using namespace std;
int Max(int a,int b)
if(a > b)
else
return a;
else
retum b;
void main( )
int m,n;
m=10,n=5;
int max=Max(m,n);
cout < < max < < end1;
A. 10
B. 程序有误
C. 1
D. 0
[单项选择]下列程序的输出结果是
#include"iostream"
using namespace std;
int Max(int a,int b)
{
if(a>b)
return a;
else
return b;
}
void main( )
{
int m,n;
m=10,n=5;
int max=Max(m,n);
cout<<max<<endl;
}
A. 10
B. 程序有误
C. 1
D. 0
[单项选择]如下程序的输出是
#include<iostream>
using namespace std;
class Base
public:
Base( )cout<<"BB";f( );
void f( )cout<<"Bf";
;
class Derived:public Base
public:
Derived( )eout<<"DD";
void f( )cout<<"Df";
;
int main( )Derived d;return 0;
A. BBBff)D
B. BBDfDDDf
C. DD
D. DDBBBf
[单项选择]如下程序的输出是 #include<iostream> using namespace std; class Base{ public: Base( ){cout<<"BB";f( );} void f( ){cout<<"Bf";} }; class Derived:public Base{ public: Derived( ){eout<<"DD";} void f( ){cout<<"Df";} }; int main( ){Derived d;return 0;}
A. BBBff)D
B. BBDfDDDf
C. DD
D. DDBBBf
[填空题]下列程序的输出结果是 【8】
#include<iostream>
using namespace std;
int &qetVar(int *pint) renurn *pint;int main ( ) int a =10;
getVar(&a) = 20;
cout<<a<<end1;
return 0;