#ifndefFUNCTION_H_#defineFUNCTION_H_#include#include#include"polyfit.h"#includeusingnamespacestd;dxs::dxs(){ifstreamfin("多项式拟合.txt");fin>>n;x=newfloat[n];y=newfloat[n];for(inti=0;i>x[i];}for(i=0;i>y[i];