更多"有以下程序 #include <stdio.h> #include"的相关试题:
[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
usingnamespacestd;
classA{
public:
A(){cout<<"A";}
};
classB{public:B(){cout<<"B";}};
classC://publicA{
Bb;
public:
C(){cout<<"C";}
};
intmain(){Cobj;return0;}
执行后的输出结果是( )。
A. CBA
B. BAC
C. ACB
D. ABC
[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
[填空题]
以下程序运行后的输出结果是()。
#include
#include
#include
main( )
{ char *p;int i;
p=(char*)malloc(sizeof(char)*20);
strcpy(p,"welcome");
for(i=6;i>=0;i--) putchar(*(p+i));
printf("/n"); free(p);
}
[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】 。
[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