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  1. #include <stdio.h>
  2. #include <math.h>
  3. #include <time.h>
  4.  
  5. int main() {
  6.     const int n = 100000;
  7.     const double b = 1.0;
  8.     const double a = 0.70710678118;
  9.     const double h = (b - a) / n;
  10.     double sqrx, x, s;
  11.  
  12.     clock_t start, end;
  13.     double total_time = 0.0;
  14.  
  15.     for (int j = 0; j < 1000; j++) {
  16.     	s = 0.0;
  17. 	    start = clock();
  18.  
  19. 	    for (int i = 1; i < n; i ++) {
  20. 	        x = a + h * i;
  21. 	        sqrx = x * x;
  22. 	        s += sqrt(1 - sqrx) / sqrx;
  23. 	    }
  24.  
  25.     	end = clock();
  26.         total_time += (double)(end - start) / CLOCKS_PER_SEC;
  27.     }
  28.  
  29.     printf("Average time: %lf seconds\n", total_time / 1000.0);
  30.  
  31.     printf("s = %f", s * h);
  32. }
Success #stdin #stdout 1.08s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
Average time: 0.001079 seconds
s = 0.214600
https://ideone.com/cY9vwz
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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