C++作业2

来源：互联网发布：崩坏3矩阵神格buff 编辑：程序博客网时间：2024/06/08 12:07

一、阅读、运行程序后，按要求增加类的功能（此题不用写实验报告）

（1）add_a_sec() //增加1秒钟

#include <iostream>  using namespace std;  class Time  {  public:      void set_time( );         void show_time( );     void set_add_a_sec();    void show_add_a_sec()；private:       bool is_time(int, int, int);       int hour;      int minute;      int sec;  };  void Time::set_time( )   {      char c1,c2;      cout<<"请输入时间(格式hh:mm:ss)";      while(1)      {   cin>>hour>>c1>>minute>>c2>>sec;          if(c1!=':'||c2!=':')              cout<<"格式不正确，请重新输入"<<endl;          else if (!is_time(hour,minute,sec))              cout<<"时间非法，请重新输入"<<endl;          else               break;      }  }  void Time::show_time( )        {      cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::set_add_a_sec(){sec=sec+1;

        if(sec>0)

                r=sec/60

                minute=minute+r;sec=sec%60;}if(minute>60){t=minute/60;hour=hour+t;minute=minute%60;}

}void Time::show_add_a_sec(){cout<<hour<<":"<<minute<<":"<<sec<<endl;}bool Time::is_time(int h,int m, int s)  {      if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)          return false;      return true;  } int main( )  {      Time t1;        t1.set_time( );         t1.show_time( ); t1.set_add_a_sec();t1.show_add_a_sec();    return 0;  }

（2）add_a_minute() //增加1分钟

#include <iostream>  using namespace std;  class Time  {  public:      void set_time( );         void show_time( );     void set_add_a_minute();    void show_add_a_minute();private:       bool is_time(int, int, int);       int hour;      int minute;      int sec;  };  void Time::set_time( )   {      char c1,c2;      cout<<"请输入时间(格式hh:mm:ss)";      while(1)      {   cin>>hour>>c1>>minute>>c2>>sec;          if(c1!=':'||c2!=':')              cout<<"格式不正确，请重新输入"<<endl;          else if (!is_time(hour,minute,sec))              cout<<"时间非法，请重新输入"<<endl;          else               break;      }  }  void Time::show_time( )        {      cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::set_add_a_minute(){minute=minute+1;

if(minute>60){t=minute/60;hour=hour+t;minute=minute%60;}

}

void Time::show_add_a_minute(){cout<<hour<<":"<<minute<<":"<<sec<<endl;}bool Time::is_time(int h,int m, int s) { if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60) return false; return true; } int main( ) { Time t1; t1.set_time( );t1.show_time( ); t1.set_add_a_minute();t1.show_add_a_minute(); return 0; }

(3)add_an_hour() //增加1小时

#include <iostream>  using namespace std;  class Time  {  public:      void set_time( );         void show_time( ); void set_add_a_hour();void show_add_a_hour();private:       bool is_time(int, int, int);       int hour;      int minute;      int sec;  };  void Time::set_time( )   {      char c1,c2;      cout<<"请输入时间(格式hh:mm:ss)";      while(1)      {   cin>>hour>>c1>>minute>>c2>>sec;          if(c1!=':'||c2!=':')              cout<<"格式不正确，请重新输入"<<endl;          else if (!is_time(hour,minute,sec))              cout<<"时间非法，请重新输入"<<endl;          else               break;      }  }  void Time::show_time( )        {      cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::set_add_a_hour(){hour++;}void Time::show_add_a_hour(){cout<<hour<<":"<<minute<<":"<<sec<<endl;}bool Time::is_time(int h,int m, int s)  {      if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)          return false;      return true;  } int main( )  {      Time t1;        t1.set_time( );         t1.show_time( ); t1.set_add_a_hour();t1.show_add_a_hour();    return 0;  }

(4)add_seconds(int) //增加n秒钟

#include <iostream>  using namespace std;  class Time  {  public:      void set_time( );         void show_time( ); void set_add_a_sec(int n);void show_add_a_sec();private:       bool is_time(int, int, int);       int hour;      int minute;      int sec;  };  void Time::set_time( )   {      char c1,c2;      cout<<"请输入时间(格式hh:mm:ss)";      while(1)      {   cin>>hour>>c1>>minute>>c2>>sec;          if(c1!=':'||c2!=':')              cout<<"格式不正确，请重新输入"<<endl;          else if (!is_time(hour,minute,sec))              cout<<"时间非法，请重新输入"<<endl;          else               break;      }  }  void Time::show_time( )        {      cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::set_add_a_sec(int n){int r,t;sec=sec+n;if(sec>60){r=sec/60;minute=minute+r;sec=sec%60;}if(minute>60){t=minute/60;hour=hour+t;minute=minute%60;}}void Time::show_add_a_sec(){cout<<hour<<":"<<minute<<":"<<sec<<endl;}bool Time::is_time(int h,int m, int s)  {      if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)          return false;      return true;  } int main( )  {      Time t1;        t1.set_time( );         t1.show_time( ); t1.set_add_a_sec(79);t1.show_add_a_sec();    return 0;  }

(5)add_minutes(int) //增加n分钟

#include <iostream>  using namespace std;  class Time  {  public:      void set_time( );         void show_time( ); void set_add_a_minute(int n);void show_add_a_minute();private:       bool is_time(int, int, int);       int hour;      int minute;      int sec;  };  void Time::set_time( )   {      char c1,c2;      cout<<"请输入时间(格式hh:mm:ss)";      while(1)      {   cin>>hour>>c1>>minute>>c2>>sec;          if(c1!=':'||c2!=':')              cout<<"格式不正确，请重新输入"<<endl;          else if (!is_time(hour,minute,sec))              cout<<"时间非法，请重新输入"<<endl;          else               break;      }  }  void Time::show_time( )        {      cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::set_add_a_minute(int n){int t;minute=minute+n;if(minute>60){t=minute/60;hour=hour+t;minute=minute%60;}}void Time::show_add_a_minute(){cout<<hour<<":"<<minute<<":"<<sec<<endl;}bool Time::is_time(int h,int m, int s)  {      if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)          return false;      return true;  } int main( )  {      Time t1;        t1.set_time( );         t1.show_time( ); t1.set_add_a_minute(80);t1.show_add_a_minute();    return 0;  }

(6)add_hours(int) //增加n小时

#include <iostream>  using namespace std;  class Time  {  public:      void set_time( );         void show_time( ); void set_add_a_hour(int n);void show_add_a_hour();private:       bool is_time(int, int, int);       int hour;      int minute;      int sec;  };  void Time::set_time( )   {      char c1,c2;      cout<<"请输入时间(格式hh:mm:ss)";      while(1)      {   cin>>hour>>c1>>minute>>c2>>sec;          if(c1!=':'||c2!=':')              cout<<"格式不正确，请重新输入"<<endl;          else if (!is_time(hour,minute,sec))              cout<<"时间非法，请重新输入"<<endl;          else               break;      }  }  void Time::show_time( )        {      cout<<hour<<":"<<minute<<":"<<sec<<endl; } void Time::set_add_a_hour(int n){hour=hour+n;}void Time::show_add_a_hour(){cout<<hour<<":"<<minute<<":"<<sec<<endl;}bool Time::is_time(int h,int m, int s)  {      if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)          return false;      return true;  } int main( )  {      Time t1;        t1.set_time( );         t1.show_time( ); t1.set_add_a_hour(5);t1.show_add_a_hour();    return 0;  }

二、项目名称：正整数类

#include<iostream>  #include<math.h>    using namespace std;    class NaturalNumber    {private:        int n;     public:        void setValue (int x);//置数据成员n的值，要求判断是否是正整数        int getValue();  //返回私有数据成员n的值        bool isPrime();  //判断数据成员n是否为素数，是返回true，否则返回false        void printFactor();  //输出数据成员n的所有因子，包括1和n自身        bool isPerfect(); //判断数据成员n是否为完全数。若一个正整数n的所有小于n的因子之和等于n, 则称n为完全数, 如6=1+2+3是完全数。        bool isReverse(int x);//判断形式参数x是否为数据成员n的逆向数（例321是123的逆向数）。        bool isDaffodil(int x); //判断形式参数x是否是水仙花数。水仙花数的各位数字立方和等于该数，如153=1*1*1+5*5*5+3*3*3        void printDaffodils(); //显示所有大于1，且小于数据成员n的水仙花数；  };  void NaturalNumber::setValue(int x)  {      if(double(x)==x&&x>0)          n=x;      else          cout<<"这不是整数，拒绝"<<endl;  }  int NaturalNumber::getValue()  {         return n;  }  bool NaturalNumber::isPrime()  {      if(n<2) return 0;      for(int i=2;i<=sqrt(n);i++)          if(n%i==0)              return 1;          return 0;  }  void NaturalNumber::printFactor()  {  for(int j=1;j<=n;j++)      {   if(n%j==0)              cout<<j<<" ";          else cout<<"";      }      cout<<endl;  }  bool NaturalNumber::isPerfect()  {      int sum=0;      for(int i=1;i<n;i++)      {   if(n%i==0)              sum=sum+i;          else sum=sum+0;      }      if(sum==n)          return 1;      else return 0;  }  bool NaturalNumber::isReverse(int x)  {        int sum=0,d=n;      while(d!=0)      {                sum=sum*10+d%10;          d=d/10;      }  if(sum!=x)      return 0;  else return 1;  }  bool NaturalNumber::isDaffodil(int x)  {      int d=x,sum=0;      while(d)      {          sum+=(d%10)*(d%10)*(d%10);          d/=10;      }      if(sum==x)          return 1;      else return 0;  }  void NaturalNumber::printDaffodils()  {      for(int i=2;i<n;i++)      {          int d=i,sum=0;          while(d!=0)          {              sum+=(d%10)*(d%10)*(d%10);              d/=10;          }          if(sum==i)               cout<<i<<" ";          else cout<<"";      }      cout<<endl;  }  void main(void)    {        NaturalNumber nn;   //定义类的一个实例（对象）        nn.setValue (6);        cout<<nn.getValue()<<(nn.isPrime()?"是":"不是")<<"素数" <<endl;            nn.setValue (37);         cout<<nn.getValue()<<(nn.isPrime()?"是":"不是")<<"素数" <<endl;            nn.setValue (84);         cout<<nn.getValue()<<"的因子有：";        nn.printFactor();            //随着成员函数的实现，增加代码以完成相关的测试。注意判断类的成员函数需要测试是或否两种情况……              nn.setValue (6);      cout<<nn.getValue()<<(nn.isPerfect()?"是":"不是")<<"完全数"<<endl;      nn.setValue(123);      int x=321;      cout<<"x等于"<<x<<(nn.isReverse(321)?"是":"不是")<<nn.getValue()<<"的逆向数"<<endl;      int x1=153;      cout<<"x1等于" <<x1<<(nn.isDaffodil(x1)?"是":"不是")<<"水仙花数"<<endl;      nn.setValue(1000);      cout<<"小于"<<nn.getValue()<<"的水仙花数有：" ;      nn.printDaffodils();    }

三、BOOK类

#include <iostream>  #include<cstring>  using namespace std;  class Book  {  private:      char name[50];      char writer[50];      char public_name[50];      float price;      int number;      int NO;  public:      void setBook(char *n,char *w,char *pu,float pr,int nu,int N);      void borrow();      void restore();      void print();      void set_NO(int N);      int get_NO();  };  void Book::setBook(char *n,char *w,char *pu,float pr,int nu,int N)  {      strcpy(name,n);      strcpy(writer,w);      strcpy(public_name,pu);      price=pr;      number=nu;      NO=N;  }  void Book::borrow()  {      cout<<number--;    }  void Book::restore()  {      cout<<number++;    }  void Book::print()  {      cout<<"书名："<<name<<endl;      cout<<"作者："<<writer<<endl;      cout<<"出版社："<<public_name<<endl;      cout<<"价格："<<price<<endl;      cout<<"数量："<<number<<endl;      cout<<"书号："<< NO<<endl;      cout<<endl;  }  void Book::set_NO(int N )  {      NO=N;  }  int Book::get_NO()  {      cout<<"新书号：";      return NO;  }      int main()  {      Book b;      b.setBook("jiewo","yuqiuyu","weifang",25,5,2014);      b.print();      b.borrow();      b.print();      b.restore();      b.print();      b.set_NO(2015);      b.print();      cout<<b.get_NO();          return 0;  }

五、分数类

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