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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=5,h,ci;
  10. 	int i,No,m;
  11.  
  12. for(No=1;No<100;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 0s 5280KB
comments (?)
stdin 
Standard input is empty
stdout 
       1 0.000000000139
       2 0.000000000139
       3 3.333383151175
       4 1.403858144935
       5 1.772270493802
       6 1.803821883677
       7 1.758384277114
       8 1.776445872197
       9 1.771608231330
      10 1.772594308126
      11 1.772435181852
      12 1.772455856461
      13 1.772453675799
      14 1.772453863355
      15 1.772453850170
      16 1.772453850930
      17 1.772453850895
      18 1.772453850897
      19 1.772453850898
      20 1.772453850898
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      22 1.772453850899
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      25 1.772453850900
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https://ideone.com/25Glfh
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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