In programul de mai jos se ia o functie la tema Metoda coardelor. Scrieti instructiunea ce lipseste:

#include<iostream.h>
#include<math.h>
#define eps 0.00000000001
#define iter 200
double f(double x)
{
return x*x*x-2*x*x*cos(x)+x-3;
}
void main()
{
unsigned char i;
double x,x0,x1,a,b,y;
cout<<"a=";cin>>a;cout<<"b=";cin>>b;
i=0;x0=a;x1=b;x=x0;y=f(x);
if (Răspuns 24 întrebare
)
	{
	while ( (i<=iter) && ((y<-eps) || (y>eps)) )
		{
		x=x0-f(x0)*(x1-x0)/(f(x1)-f(x0));
		y=f(x);
		if (f(x0)*y<0) x1=x; 
		else x0=x;
		cout<<"\n\nf("<<x<<")="<<f(x)<<" la iteratia "<<(int)i;
		i++;
		}
	if (i>iter) cout<<"problema nu se poate rezolva in nr.maxim de iteratii";
	} else cout<<"interval invalid";
}