更多"有如下的程序: #include<iostream> #inclu"的相关试题:
[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";
f1.close( );
ifstream f2 ("DATA.TXT");
if(f2.good( ))f2>>s;
f2. close( );
cout<<s;
return 0;
}
执行上面的程序交输出 【9】 。
[填空题]有如下的程序:
#include <iostream>
#include <fstream>
using namespace std;
int main( )
ofstream outf("D://temp.txt",ios_base::trunc) ;
outf<<"World Wide Web";
outf.close( );
ifstream inf("D://temp.txt");
char s[20];
inf>>s;
inf.close( );
cout<<s;
return 0;
执行后的输出结果是 【15】 。
[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";
f1.close( );
ifstream f2 ("DATA.TXT");
if(f2.good( ))f2>>s;
f2. close( );
cout<<s;
return 0;执行上面的程序交输出 【9】 。
[填空题]有以下程序:
#include<iostream>
#include<fstream>
using namespace std;
int main( )
fstream file;
file.open("abc.txt", ios :: in);
if ( !file )
cout<<"Can not open abc.txt"<<end1;
abort( );
char buf[ 80 ];
int i = 0;
while (!file.eof( ))
file.getline(buf,80);
i++;
cout<<"Lines :"<<i<<end1;
file.close( );
return 0;
程序实现的功能是 【15】 。
[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】 。
[简答题]#include<iostream>
#include<fstream>
#include<string>
using namespace std;
class A
public:
A(const char*na)strcpy(name,na);
private:
char name[80];
;
class B:public A
public:
B(const char*nm):A(nm)
void show( );
;
void B::show( )
cout<<"name:"<<name<<endl;
void main( )
B b1("B");
b1.show( );
[填空题]有以下程序:
#include <iostream.h>
#include <fstream.h>
#include <stdlib.h>
int main( )
fstream filel,file2;
char line[100];
filel.open("source.txt",ios::in);
if(!file1)
cout<<"Can’t open file source.txt!"<<end1;
abort( );
file2.open("dest.txt",ios::out);
if(!file2)
cout<<"Can’t open file dest.txt!"<<end1;
abort( );
while(!file1.eof( ))
filel.getline(1ine,100);
file2<<line;
file2<<end1;
filel.close( );
file2.close( );
return 0;
此程序实现的功能是 【15】 。
[填空题]请将如下程序补充完整,使得输出结果为:bbaa。
#include<iostream>
using naluespace std;
class A
public:
______eout<<"aa";
;
class B:public A
public:
~B( )eont<<"bb";
;
int ulain( )
B*P=new B;
delete P;
return 0;
[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;
A. DerivedBase
B. BaseBase
C. DerivedDerived
D. BaseDerived