Перегрузка потокового ввода/вывода

ostream& operator<< (ostream& out, Poli& outstream) {
    out<<"Степень полинома="<<outstream.n<<endl;
    for(int i=0;i<outstream.n;i++){
        out<<"x[]="<<outstream.x[i]<<"; ";
    }
    out<<endl;
    for(int i=0;i<outstream.n;i++){
        out<<"k[]="<<outstream.k[i]<<"; ";
    }
    out<<endl;
    out<<"y="<<outstream.y<<endl;
    return out;
}
istream& operator>> (istream& in, Poli& instream) {
    in>>instream.n;
    for(int i=0;i<instream.n;i++){
        in>>instream.x[i];
        in>>instream.k[i];
    }
    float g=0;
    for(int i=0;i<instream.n;i++){
    instream.p[i]=g;
    g=g+2;
    }
    for(int i=0;i<instream.n;i++)
        instream.y+=(instream.k[i]*pow(instream.x[i],instream.p[i]));
 
 return in;
}

#include <math.h>
#include <iostream>
#include<locale>
using namespace std;
class Poli{
    public:
    float *p;//массив степеней
    float *x;//массив x
    float y;//массив y
    float *k;//массив коэф. перед x
    int n;
    Poli(int n1);
    Poli(int n1,float *x1,float *k1);
    friend Poli& operator++(Poli& i);
    friend ostream& operator<< (ostream& out,Poli& outstream);
    friend istream& operator>> (istream& in, Poli& instream);
    friend bool operator==(const Poli& left,const Poli& right);
};