#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "ps.h"

int main(void)
{    
     init();
     viewport(0.2,0.2,0.8,0.8); xyworld(0.0,0.0,1.0,1.0);
     linety(1); plot(0.1, 0.1, 3); plot(0.8, 0.1, 2);  stroke(); 
     linety(2); plot(0.1, 0.2, 3); plot(0.8, 0.2, 2);  stroke();
     linety(3); plot(0.1, 0.3, 3); plot(0.8, 0.8, 2);  stroke();
     fin();
     
     return 0;
}