/* example5.ch */
#include <control.h>

int main() {
    array double num[1] = {9},
                 den1[2] = {1, 3},
                 den2[3] = {1, 2, 9}, 
                 den[4];
    CControl sys;
    CPlot plot;

    conv(den, den1, den2);
    sys.model("tf", num, den);
    sys.step(&plot, NULL, NULL, NULL);

    return 0;
}