更多"有以下程序: #include<stdio.h> #inclu"的相关试题:
[单项选择]有以下程序
#include
#include
typedef struct {char name[9]; char sex; int score[2]; } STU;
STU f(STU a)
{ STU b={"Zhao",’m’,85,90};
int i;
strcpy(a.name,b.name);
a.sex=b.sex;
for(i=0;i<2;i++) a.score[i]=b. score[i];
return a;
}
main( )
{ STU c={"Qian",’f’,95,92}, d;
d=f(c);
printf("%s,%c,%d,%d,",d.name, d.sex, d.score[0], d.score[1]);
printf("%s,%c,%d,%d/n",c.name, c.sex, c.score[0], c.score[1]);
}
程序运行后的输出结果是_______。
A. Zhao,m,85,90,Qian,f,95,92
B. Zhao,m,85,90, Zhao,m,85,90
C. Qian,f,95,92, Qian,f,95,92
D. Qian,f,95,92, Zhao,m,85,90
[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]
有以下程序
#include
#include
struct A
{ int a; char b[10]; double c;};
void f(struct A t);
main( )
{ struct A a={1001,"ZhangDa",1098.0};
f(a); printf("%d,%s,%6.1f/n",a.a,a.b,a.c);
}
void f(struct A t)
{ t.a=1002; strcpy(t.b,"ChangRong");t.c=1202.0;}
程序运行后的输出结果是()
A. 1001,zhangDa,1098.0
B. 1002,changRong,1202.0
C. 1001,ehangRong,1098.O
D. 1002,ZhangDa,1202.0
[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;
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
usingnamespaeestd;
classMyClass
{
public:
MyClass(intn){number=n;}
//拷贝构造函数
MyClass(MyClass&other){number=other.number;}
~MyClass(){}
private:
intnumber;
};
MyClassfun(MyClassp)
{
MyClasstemp(p);
returntemp;
}
intmain()
{
MyCIassobj1(10),obj2(O);
MyClassobj3(obj1);
obj2=fun(obj3);
return0;
程序执行时,MyClass类的拷贝构造函数被调用的次数是( )。
A. 5
B. 4
C. 3
D. 2
[单项选择]有以下程序:
#include
usingnamespacestd;
classsample
{
private:
intX;
public:
sample(inta)
{
X=a:
}
frienddoublesquare(samples);
};
doublesquare(samples)
{
returnS.x*S.X:
}
intmain()
{
samples1(20),s2(30);
cout< return0;
}
执行结果是( )。
A. 20
B. 30
C. 900
D. 400
[填空题]
有以下程序
#include
#include
void fun(char *str)
{ char temp;int n,i;
n=strlen(str);
temp=str[n-1];
for(i=n-1;i>0;i--) str[i]=str[i-1];
str[0]=temp;
}
main( )
{ char s[50];
scanf("%s",s); fun(s); printf("%s/n",s);}
程序运行后输入:abcdef<回车>,则输出结果是 () 。
[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]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
[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】 。