更多"有以下程序: #include <iostream> #inclu"的相关试题:
[单项选择]有以下程序:
#include 〈iostream〉
#include 〈string〉
using namespace std;
class visited
private:
int number;
char *name;
public:
static int glob;
void set mes(char *
[单项选择]有如下程序
#include <iostream>
#include <iomanip>
using namespace std;
int main( )
cout<<setprecision(3)<<fixed<<setfill('*')<<setw(8);
cout<<12.345<<______34.567;
return 0;
若程序的输出是:
**12.345**34.567
则程序中下划线处遗漏的操作符是( )。
[填空题]有如下的程序:
#include<iostream>
#include<fstream>
using namespace std;
int main( )
char s[25]="Programming language";
ofstream f1("DATA.TXT");
f1<<"C++Programming";
n.close( );
ifstream f2("DATA.TXT");
if(f2.good( ))f2>>s;
f2.close( );
cout<<s;
return 0;
执行上面的程序将输出 ______。
[填空题]执行以下程序后,输出结果第二行的内容是______。
#include<iostream>
using namespace std;
class TestClass
public:
virtual void who( )cout<<"Base Class"<<endl;
;
class TestClass1:public TestClass
public:
virtual void who( )cout<<"TestClass1 Class"<<endl;
;
class TestClass2:public TestClass
public:
virtual void who( )cout<<"TestClass2 Class"<<endl;
;
int main(int argc,char*argv[])
TestClass obj1,*p;
TestClass1 obj2;
TestClass2 obj3;
P=&obj1;p->who( );
p=&obj2;p->who( );
p=&obj3;p->who( );
return 0:
[填空题]有以下程序:
#include <iostream>
#include <fstream>
using namespace std;
int main( )
{
fstream file;
file.open("abc.txt", ios_base::in);
if (! file )
{
cout<<"Can not open abc.txt"<<end1;
abort( );
}
char ch;
int i = 0;
while ( ! file.eof( ) )
{
file.get(ch);
i++;
}
cout<<"Characters : "<<i<<end1;
file.close( );
return 0;
}
程序实现的功能是 【15】 。
[单项选择]有以下程序:
#include<iostream>
#include<string>
using namespace std;
int main( )
char arr[2][4];
strcpy(arr[0],"you");
strcpy(arr[1],"me");
arr[0][3]='&';
cout<<arr[0]<<end1;
return 0;
执行后的输出结果是( )。
A. you&me
B. you
C. me
D. err
[单项选择]有以下程序 #include <iostream> #include <string> using namespace std; class base { private: char baseName[10]; public: base ( ) { strcpy(baseName,"Base"); } virtual char *myName( ) { return baseName; } char *className( ) { return baseName; } }; class Derived : public base { private: char derivedName[10]; public: Derived( ) { strcpy(derivedName,"Derived"); } char *myName( ) { return derivedName; } char *className( ) { return derivedName; } }; void showPtr(base &p) { cout<<p.myName ( ) <<" "<<p.className ( ); } int main ( ) { base bb; Derived dd; showPtr(dd); return 0; } 运行后的输出结果为
A. Derived Base
B. Base Base
C. Derived Derived
D. Base Derived
[单项选择]有以下程序: #include <iostream> #include <cstdlib> using namespace std; int main( ) { int arraysize; int *array; cout<<"Please input the size of the array:"; cin>>arraySiZe; array=new int[arraysize]; if(array==NULL) { cout<<"allocate Error/n"; exit(1); } for(int i=0;i<arraysize;i++) array[i]=i*i; int j; cout<<"which element you want to check:"; cin>>j; cout<<array[j]<<end1; return 0; } 执行程序输入:10<空格>5,则输出结果为( )。
A. allocate Error
B. 1
C. 0
D. 25
[填空题]请将如下程序补充完整,使得输出结果为:bbaa
#include <iostream>
using namespace std;
class A {
public:
【14】 {cout << "aa"; }
};
class B: public A{
public:
~B( ){ cout << "bb"; }
};
int main ( ) {
B *p= new B;
delete p;
return 0;
}