更多"下列程序的输出结果是( )。
#include<iost"的相关试题:
[单项选择]下列程序的输出结果是( )。
#include<iostream.h>
class Myclass {
public:Myclass(int i=0,intj=0)
{ x=i;
y=j;
}
void show( ) { cout < < "x=" < < x < < " " < "y=" < < y < < end1;}
void show( )const { cout < < "x=" < < " " < < "y=’’ < < y < < end1;}
privated:
int x; int y;
};
void main( )
{ Myclass my1(3,4);
const my2(7,8);
my1.show( );my2.show( );}
A. x=4,y=3;x=7,y=8
B. x=3,y=4;x=7,y=8
C. x=7,y=8;x=4,y=3
D. x=8,y=7;x=7,y=8
[填空题]以下程序的输出结果是【 】。
#include<iostream.h>
class object
{ private:
int va1;
public:
object( );
object(int i)
~object( );} ;
object::Object( )
{ va1=0;
cout < < "Default constructor for object" < < end1;}
object::object(int i)
{ va1=i
cout < < "Constructor for object" < < va1 < < end1;}
object::~object( )
{ cout < < "Destructor for object" < < va1 < < end1;}
class container { private:
object one;
object two;
int data;
public:
container( );
container(int i,int j,int k);
~container( );} ;
container::container( )
{ data=0;
cout < < "Default constructor for container" < < end1;}
container::container(int i,int j,int k):two(i),one(j)
{ data=k;
cout < < "Constructor for container" < < end1;}
container::~container( )
{ cout < < "Destructor
[填空题]以下程序的输出结果是( )。
#include
#include
#include
mian( )
{ char *p, *q, *r;
p=q=r=(char *)malloc(sizeof(char)*20);
strcpy(p,”attaboy,welcome!”);
printf(“%c%c%c/n”,p[11], q[3], r[4]);
free(p);
}
[单项选择]如下程序的输出结果是
#include<iostream>
#include<iomanip>
using namespace std;
class CSum
int x,y;
public:
CSum(int x0,int y0):X(x0),y(y0)
friend ostream& operator<<(ostream& os,const CSum& xA)
os<<setw(5)<<xa.x+xa.y:
return os;
;
int main( )
CSum y(3,5);
cout<<setfill('*')<<8;
cout<<y;
return 0;
A. 88
B. ****88
C. ****8****8
D. 8****8
[单项选择]如下程序的输出结果是 #include<iostream> #include<cstring> using namespace std; class XCF{ int a; public: XCF(int aa=0):a(aA) {cout<<"1";} XCF(XCF&X){a=x.a;cout<<"2";l ~XCF( ){cout<<a;} int Geta( )t return a;} }; int main( ){ XCF d(15),d2(d1); XCF*pd=new XCF(8); cout<<pd->Geta( ); delete pd; return 0; }
A. 1215588
B. 1218855
C. 12185
D. 128512
[单项选择]如下程序的输出结果是 #include<lostream> #include<cstring> using namespace std; class XCD{ char*a; int b; public: XCD(char*aa,int bB) { a=new char[strlen(aA) +1]; strcpy(a,aA) ; b=bb; } char*Geta( ){return a;} int Getb( ){return b;} }; int main( ){ char*pl="abcd",*p2="weirong": int dl,6,d2=8; XCD x(pl,d1),y(p2,d2); cout<<strlen(x.Geta( ))+y.Getb( )<<endl; return 0; }
A. 12
B. 16
C. 14
D. 11
[填空题]下列程序输出结果是 【13】 。
include <iostream>
using namespace std;
template <typename T>
T fun(T a, T b) return (a<=b)a:b;
int main( )
cout<<fun(3,6)<<’,’<<fim(3.14F, 6.28F)<<end 1;
return 0;
[单项选择]以下程序输出结果是( ):
#include<iostream>
using namespace std;
void add(int x,int y,int *z)
*z=y+x;
int main( )
int a,b,c;
add(8,4,&a);
add(6,a,&b);
add(a,b,&c);
cout<<a<<","<<b<<","<<c<<end1;
return 0;
A. 12, 10, 14
B. 12, 18, 30
C. 12, 6, 18
D. 12, 14, 30
[单项选择]下面程序的输出结果是( )。
#include
Usingnamespacestd;
ClassBase{
public:
Base(intx=O){count< }
};
ClassDerived:publicBase{
public:Derved(intx=0{count< }
private;
Baseval;
};
intmina(){
Derivedd(1);
retrun0;
}
A. 0
B. 1
C. 01
D. 001