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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. double f(double x){
  5. 	return exp(-x*x);
  6. }
  7.  
  8. int main(void) {
  9. 	double Tm,L=50,h,ci;
  10. 	int i,No,m;
  11.  
  12. for(No=1;No<500;No++){
  13. 	Tm=0;
  14. 	m=No;
  15. 	ci=-L+h;
  16.     h=2*L/m;
  17. 	Tm=(f(-L)+f(L))/2;
  18. 	for(i=1;i<m;i++){
  19. 		Tm+=f(ci);
  20. 		ci+=h;
  21. 	}
  22. 	Tm*=h;
  23. 	printf("%8d %.12lf\n",No,Tm);
  24. }
  25. 	return 0;
  26. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
Standard input is empty
stdout 
       1 0.000000000000
       2 0.000000000000
       3 33.333333333333
       4 0.000000000000
       5 0.000000000278
       6 0.000249088975
       7 0.000000002027
       8 0.515278954419
       9 0.000000320570
      10 2.909604588643
      11 0.000016438811
      12 4.694269491706
      13 0.000265851184
      14 5.281535923830
      15 0.001902857237
      16 5.253898395841
      17 0.007923252972
      18 4.992825074938
      19 0.023144229641
      20 4.665457195978
      21 0.053255999542
      22 4.337408475018
      23 0.103201139802
      24 4.032142034721
      25 0.175370530738
      26 3.756194534299
      27 0.268741795643
      28 3.509513821524
      29 0.379381380892
      30 3.289712329131
      31 0.501725884458
      32 3.093832642498
      33 0.629882734558
      34 2.919070760856
      35 0.758541131256
      36 2.763039196120
      37 0.883431840233
      38 2.623811264953
      39 1.001443640508
      40 2.499858909980
      41 1.110536390533
      42 2.389947378861
      43 1.209562239923
      44 2.293026396245
      45 1.298065622355
      46 2.208140573836
      47 1.376098978508
      48 2.134368304385
      49 1.444068908400
      50 2.070788875359
      51 1.502614950481
      52 2.016472277393
      53 1.552517383740
      54 1.970484398463
      55 1.594628622969
      56 1.931900729081
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https://ideone.com/JzYnSp
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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