C++程序设计实践指导1.12数组中数据线性变换改写要求实现

改写要求1：分别用指针pa、pb代替数组

改写要求2：从键盘输入data元素 元素个数任意，输入0结束

#include <cstdlib>

#include <iostream>

using namespace std;

class DATA

{

      double *pa,*pb;

      double max,min;

      double new_max,new_min;

      int length;

      public:

             DATA(double a1[],double x,double y,int len)

             {

                  int i;

                  length=len;

                  pa=new double[len];

                  pb=new double[len];

                  for(i=;i<length;i++)

                          pa[i]=a1[i];

                  new_max=x;

                  new_min=y;

                  max=min=pa[];

                  for(i=;i<length;i++)

                  {

                     if(pa[i]>max)

                     max=pa[i];

                     if(pa[i]<min)

                     min=pa[i];

                  }

             }

             void fun();

             void print()

             {

                  while(*pa!='\0')

                  cout<<*pa++<<'\t';

                  cout<<endl;

                  cout<<"["<<new_min<<","<<new_max<<"]"<<endl;

                  while(*pb!='\0')

                  cout<<*pb++<<endl;

             }

};

void DATA::fun()

{

     for(int i=;i<length;i++)

      pb[i]=(pa[i]-min)*(new_max-new_min)/(max-min)+new_min;

}

int main(int argc, char *argv[])

{

    int i,j=;

    cout<<"输入元素个数"<<endl;

    cin>>i;

    double *data=new double[i+];

    int x,y;

    cin>>data[];

    while(data[j])

    {

           j++;

           cin>>data[j];

    }

    while(*data!='\0')

    cout<<*data++<<'\t';

    cout<<endl;

    cout<<"输入x，y"<<endl;

    cin>>x>>y;

    DATA test(data,x,y,i);

    test.fun();

    test.print();

    system("PAUSE");

    return EXIT_SUCCESS;

}