Quote:
how to be a problem here, my code does not calculate the complex roots, the code only calculates the real roots

Code:
//horner's polynomial soln, synthetic division
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <math.h>
using namespace std;
int main()
{
int it, n, i;
double *a,*b,*c,x=1000;
cout<<"Enter the degree of the polynomial:";
cin>>n;
a=new double [n];
b=new double [n];
c=new double [n];
cout<<"Enter the coefficients of the polynomial"<<endl;
for ( i = 0; i < n; i++ )
cin >> a[i];
do
{
it = 0;
c[0] = a[0];
b[0] = a[0];
do
{
for ( i = 1; i < n; i++ )
b[i] = a[i] + x*b[i1];
for ( i = 1; i < n; i++ )
c[i] = b[i] + x*c[i1];
x = x  b[n]/c[n1];
it++;
}
while (abs( b[n]) > 1e5 && it<100 );
cout << "The root is:" << x << endl;
n;
for ( i = 0; i < n; i++ )
a[i] = b[i];
}
while( n >= 1 );
getch();
return 0;
}
my code can't calculated a complex root, imaginare numbers. i don't know how can i used this library #include <complex.h>