func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     double a, d, x, y, r;     int i, n;     scanf( %lf%lf%d , &a, &d, &n);     for (i = 1; i <= n; i++) {       r = fmod(i * d, 4 * a);       if (r <= a)         x = r, y = 0;       else if (r <= 2 * a)         x = a, y = r - a;       else if (r <= 3 * a)         x = a - (r - 2 * a), y = a;       else         x = 0, y = a - (r - 3 * a);       printf( %.10f %.10f n , x, y);     }   }   