test.cpp

数值计算方法中的,牛顿向前和向后算法. 以前花了很长时间编写的,希望对后来的师妹师弟有用.

#include "iostream.h"

#include "NewtonFor.h"
#include "NewtonBack.h"

int main(void)
{
 NewtonFor nf;
 NewtonBack nb;
 float x[]={0,1,2,3};
 float y[]={1,3,5,12};
 float xx;

 nf.SetData(x,y,4);
 nf.CreateTable();

 nb.SetData(x,y,4);
 nb.CreateTable();

 cout<<"please enter the x value"<<endl;
 cin>>xx;
 cout<<"the result of NewtonForward is "<<nf.Cal(xx)<<endl;
 cout<<"the error of NewtonForward is "<<nf.Cal_Error(xx)<<endl;
 cout<<"the result of NewtonBackWard is "<<nb.Cal(xx)<<endl;
 cout<<"the error of NewtonBACKward is "<<nb.Cal_Error(xx)<<endl;
 return 0;
}