更多"有以下程序: #include<fstream> #include"的相关试题:
[填空题]有以下程序:
#include <fstream>
#include <string>
using namespace std;
int main ( )
{
char ch[] = "The end";
ofstream outstr( "d://put.txt", ios_base: :app);
for (int i = 0; i < strlen( ch ); i++ )
outstr.put(ch[i]);
outstr.close( );
return 0;
}
程序实现的功能是 【15】 。
[填空题]有以下程序:
#include <fstream>
#include <string>
using namespace std;
int main ( )
char ch[] = "The end";
ofstream outstr( "d://put.txt", ios_base: :app);
for (int i = 0; i < strlen( ch ); i++ )
outstr.put(ch[i]);
outstr.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】 。
[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】 。
[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]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]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;
执行上面的程序将输出______。
[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 ______。
[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( );
[单项选择]有以下程序
#include<iostream>
#include<string>
using namespace std;
class base
private:
charbaseName[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.myName0<<" "<<p.className( );
int main( )
base bb;
Derived dd;
showPtr(dD) ;
retum 0;
动行后的输出结果为
A. Derived Base
B. Base Base
C. Derived Derived
D. Base Derived