#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define POL 100000

int main (int a,char *kerej[]){
int i,j;
float dT,U=atof(kerej[1]),f=atof(kerej[2]),t=atof(kerej[3]),y[POL],y1z,y2z,ys,ts,s,c;
dT=0.000125;
ts=0;
s=sin(2*M_PI*f/8000);
c=2*cos(2*M_PI*f/8000);
y[0]=0;
j=0;

if(kerej[4]) {printf ("KOLIK MAS PARAMETRU?!?!?!!?!?!?!?!!?!?!?!\n");return 0;}
if(f<0) {printf ("JSES SILENEJ KOLIK MAS KMITOCET?!?!?!?!!?!?!?!!?!?!?!\n");return 0;}
if(t<0) {printf ("ZAPORNEJ CAS HMMMMMMMMMMMMMM?!?!?!?!!?!?!?!!?!?!?!\n");return 0;}

for (i=0;i<t;i++) {
    ts=dT*i;
    ys=U*sin(2*M_PI*f*ts);
    if(j==1)y[i]=s;
    y[i]=y[i]+y[i-1]*c+y[i-2]*(-1);
    printf ("%3.7f %3.7f %3.7f\n",ts,ys,y[i]);j++;
}




return 0;
}