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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <math.h>
  4.  
  5. #define M_PI 3.14159265
  6.  
  7. double true_area = 2.828;
  8.  
  9. int main() {
  10.     double a, b, s, x1, x2, y1, y2, q1, q2;
  11.     int count, m, n;
  12.  
  13.     x1 = 1.0; y1 = 0.0;
  14.     x2 = 0.0; y2 = 1.0;
  15.     count = 0;
  16.  
  17.     for (n = 10; n <= 100000; n = n * 5) {
  18.         count = 0;
  19.         s = 0.0;
  20.  
  21.         for (m = 0; m < n; m++) {
  22.             a = (double)rand() / RAND_MAX;
  23.             b = (double)rand() / RAND_MAX;
  24.  
  25.             q1 = (a - x1) * (a - x1) + (b - y1) * (b - y1);
  26.             q2 = (a - x2) * (a - x2) + (b - y2) * (b - y2);
  27.  
  28.             if (q1 < 1.0 && q2 < 1.0) {
  29.                 s += 1.0;
  30.             }
  31.         }
  32.  
  33.         s /= n;
  34.         printf("%d\t%f\n", n, fabs(s - true_area));
  35.     }
  36.  
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
copy
stdout
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10	2.228000
50	2.328000
250	2.188000
1250	2.249600
6250	2.257920
31250	2.256832
https://ideone.com/GA62ax
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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