2_6.cpp

a programme set to teach you how to use c

#include <iostream.h>
#include <math.h>
#include <iomanip.h>
void main()
{
	float x,x0,f,f1;
	x=1.5;
	do
	{
		x0=x;
		f=((2*x0-4)*x0+3)*x0-6;
		f1=(6*x0-8)*x0+3;
		x=x0-f/f1;
	}while(fabs(x-x0)>=1e-5);
	cout<<"方程的根=";
	cout<<setiosflags(ios::fixed)<<setprecision(6)<<x<<endl;
}