/* example4.ch */
#include <control.h>

int main() {
    double k = 11.66;
    array double complex p[3] = {complex(-1, 0),
                                 complex(-2, 0),
                                 complex(-3, 0)};
    array double num[1] = {1};
    array double den[1] = {1};
    double tf = 20;

    CControl sys1, sys2, *sys3;
    CPlot plot;

    sys1.model("zpk", NULL, p, k);
    sys2.model("tf", num, den);
    sys3 = sys1.feedback(&sys2);
    sys3->grid(1);
    sys3->step(&plot, NULL, NULL, NULL, tf);
    
    return 0;
}