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