2011年 浙工大考研计算机专业课试题C++

2011年 浙工大考研计算机专业课试题C++

个人闲暇之余整理,可能会有许多细节问题且题目实现代码不唯一,若有需要可邮件与我交流。

 

一,读程序写结果5*9=45分

// kaoshi.cpp : 定义控制台应用程序的入口点。

//2011-1-1

 

#include "stdafx.h"

#include <iostream>

using namespace std;

 

void Swap1(int a,int b)

{

       intt=a;a=b;b=t;

}

 

void Swap2(int &a,int &b)

{

       intt=a;a=b;b=t;

}

 

int main()

{

       intx(3),y(30);

       Swap1(x,y);

       cout<<"x="<<x<<",y="<<y<<endl;

       Swap2(x,y);

       cout<<"x="<<x<<",y="<<y<<endl;

      

       return0;

}

结果:

x=3,y=30

x=30,y=3

 

// kaoshi.cpp : 定义控制台应用程序的入口点。

//2011-1-2

#include "stdafx.h"

#include <iostream>

using namespace std;

 

class BaseClass

{

public:

       BaseClass()

       {

              cout<<"构造A对象!"<<endl;

       }

       ~BaseClass()

       {

              cout<<"析构A对象!"<<endl;

       }

};

 

class DerivedClass:public BaseClass

{

public:

       DerivedClass()

       {

              cout<<"构造C对象!"<<endl;

       }

       ~DerivedClass()

       {

              cout<<"析构C对象!"<<endl;

       }

};

 

void main()

{

       DerivedClassd;

      

}

 

结果:

构造A对象!

构造C对象!

构造C对象!

构造A对象!

 

// kaoshi.cpp : 定义控制台应用程序的入口点。

//2011-1-3

#include "stdafx.h"

#include <iostream>

using namespace std;

class A

{

public:

       A()

       {           

       }

       virtualvoid f()

       {

              cout<<"DestructorA"<<endl;

       }

       ~A()

       {

              f();

       }

};

 

class B:public A

{

public:

       B()

       {           

       }

       virtualvoid f()

       {

              cout<<"DestructorB"<<endl;

       }

       ~B()

       {

              f();

       }

};

 

void main()

{

       Bb;

       Aa=b;

 

}

 

结果:

Destructor A

Destructor B

Destructor A

 

// kaoshi.cpp : 定义控制台应用程序的入口点。

//2011-1-4

#include "stdafx.h"

#include <iostream>

#include <string>

using namespace std;

class sample

{

public:

       inti,j;

       sample(inta=0,int b=0)

       {

              i=a;

              j=b;

              cout<<"constructor1"<<endl;

       }

       sample(constsample& H)

       {

              i=H.i;j=H.j;

              cout<<"constructor2"<<endl;

       }

       voidplus(sample H )

       {

              i+=H.i;j+=H.j;

       }

       voiddisplay( )

       {

              cout<<i<<""<<j<<endl;

       }

};

 

int main()

{

       samples1(3,3),s2(4,4),s3(5,5);

       s2.display();

       s1.plus(s3);

       s1.display();

       return0;

 

}

 

结果:

constructor1

constructor1

constructor1

4 4

constructor2

8 8

 

// kaoshi.cpp : 定义控制台应用程序的入口点。

//2011-1-5

#include "stdafx.h"

#include <iostream>

using namespace std;

void f1()

{

       staticint x=0;

       x++;

       cout<<"Duringcall to f1,x="<<x<<endl;

}

 

int main()

{

       intx=10;

       cout<<"Initially,x="<<x<<endl;

       f1();

       f1();

       cout<<"Atthe end,x="<<x<<endl;

       return0;

 

}

结果:

Initially,x=10

During call to f1,x=1

During call to f1,x=2

At the end,x=10

 

二,修改程序错误   5*6=30分

// kaoshi.cpp : Defines the entry point forthe console application.

//2011-2-1

#include <iostream.h>

class Tany

{

       intx,y;

public:

       Tany(inta,int b)  //Tany(T a,T b){x=a,y=b.}

       {

              x=a,y=b;

       }

       intTsum()  //Tsum(){return x+y.}

       {

              returnx+y;

       }

};

 

void main()

{

       Tanyp(1,2);

      

       cout<<p.Tsum()<<endl;  //cout<<p.Tsum<<endl;

}

结果:

3

 

// kaoshi.cpp : Defines the entry point forthe console application.

//2011-2-2

#include <iostream.h>

 

class A

{

public:

       voidfun()

       {

              cout<<"a.fun"<<endl;

       }

};

 

class B

{

public:

       voidfun()

       {

              cout<<"b.fun"<<endl;

       }

 

       voidgun()

       {

              cout<<"b.gun"<<endl;

       }

};

 

class C:public A,public B

{

private:

       intb;

public:

       voidgun()

       {

              cout<<"c.gun"<<endl;

       }

       voidhun()

       {

              A::fun();  //fun();

       }

};

 

 

void main()

{

       Ccc;

       cc.gun();

       cc.A::fun();  //cc.fun();

}

 

结果:

c.gun

a.fun

 

// kaoshi.cpp : Defines the entry point forthe console application.

//2011-2-3

#include <iostream.h>

class A

{

public:

       A(intx=0,int y=0)  //A(int x=0,inty=0):a=x,b=y, {}

       {

              a=x;

              b=y;

       }

       voidshow()

       {

              cout<<a<<""<<b<<endl;

       }

private:

       inta,b;

};

 

int main(void)

{

       Aobj(18);

       obj.show();

       return0;

}

结果:

180

 

// kaoshi.cpp : Defines the entry point forthe console application.

//2011-2-4

 

#include "stdafx.h"

#include <iostream>

using namespace std;

class CComplex

{

public:

       doublem_real;

       doublem_image;

public:

       ~CComplex()

       {

      

       }

       voidsetValue(double r=0,double i=0)

       {

              m_real=r;

              m_image=i;

       }

       doublegetreal()

       {

              returnm_real;

       }

       doublegetimage()

       {

              returnthis->m_image;  //return this.m_image;

       }

 

       voidshow()

       {

              cout<<m_real<<"+"<<m_image<<"*i"<<endl;

       }

};

void main()

{

       CComplexcl;

       cl.setValue(2.5,7.5);

       cl.show();  //null 无此句

       cout<<cl.m_image<<endl;

}

 

结果:

2.5+7.5*i

7.5

 

// kaoshi.cpp : Defines the entry point forthe console application.

//2011-2-5

#include "stdafx.h"

#include <iostream>

using namespace std;

void main()

{

       int*a;

       int*&p=a;

       intb=20;

       *p=b;  //p=&b;

       cout<<*a;

}

 

结果:

20

 

三,程序题:75分

1  45分

请按如下要求编写程序

要求:依次从键盘上输入20个无序整数并放入到数组中,删除数组中重复元素,对数组进行递增排序后输出。

#include <iostream.h>

#define N 20

void paixu(int a[N])

{

       inti,j,d;

       for(i=0;i<N;i++)

       {

              for(j= i + 1;j<N;j++)

                     if(a[i]>a[j])

                     {

                            d=a[i];a[i]=a[j];a[j]=d;}

       }

       cout<<"将数组递增排序后:"<<endl;

       for(i=0;i<N;i++)

              cout<<a[i];

       cout<<endl;

}

void shanchu(int a[N])

{

   int i = 0, j;

   for (j = 1; j < N; j ++)

       if (a[j] != a[j - 1])

       {

          i ++;

          a[i] = a[j];

       }

       cout<<"删除相同元素后的数组是:"<<endl;

       for(j=0;j<=i;j++)

       {

              cout<<a[j];

       }

       cout<<endl;

}

void main()

{

       inta[N];

       inti;

       for( i = 0; i < N; i++ )         /* 输入N个原始数据 */

       {

              cout<<"请输入一个整数:" ;

              cin>>a[i];

       }           

       cout<<"您刚输入的数组是:"<<endl;

       for(i=0;i<N;i++)

       {

              cout<<a[i];

       }

       cout<<endl;

       paixu(a);

       shanchu(a);

}

 

2  30分

请设计一个矩形类(Rectangle),包含长和宽两个私有数据成员。要求重载运算符“>”,以实现比较两个矩形对象面积的大小。请编写类,使得如下main函数可以正常运行。

#include <iostream>

using namespace std;

int main()

{

Rectangle r1(5,6),r2(4,5);

cout<<"r1面积=";

r1.area();

cout<<endl;

cout<<"r2面积=";

r2.area();

cout<<endl;

if(r1>r2)

cout<<"r1>r2"<<endl;

else

cout<<"r1<r2"<<endl;

}

 

输出结果:

r1面积=30

r2面积=20

r1>r2

// kaoshi.cpp : Defines the entry point forthe console application.

//2011-3-2

#include <iostream>

using namespace std;

class Rectangle 

{

public:

 Rectangle(int length, int width)

 {

 nLength = length;

 nWidth = width;

 }

 voidarea()

 {

 cout<<("%d",nLength * nWidth);

 }

 booloperator >(Rectangle r) {

 if((nLength * nWidth) > (r.nLength *r.nWidth))

 return true;

 else

 return false;

 }

private:

 intnLength;

 intnWidth;

};

int main()

{

Rectangle r1(5,6),r2(4,5);

cout<<"r1面积=";

r1.area();

cout<<endl;

cout<<"r2面积=";

r2.area();

cout<<endl;

if(r1>r2)

cout<<"r1>r2"<<endl;

else

cout<<"r1<r2"<<endl;

}


 

undoner

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posted @ 2013-04-17 13:44  xinyuyuanm  阅读(375)  评论(0编辑  收藏  举报