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  1. #include <stdio.h>
  2. #include <math.h>
  3. int main()
  4. {
  5. 	double a,b,h,f;
  6. 	int n;
  7. 	scanf("%lf %lf %d",&a,&b,&n);
  8. 	if((n<=0)||(a==b))printf("Введенное 'n' не натуральное или введены два одинаковых числа\n");
  9. 	else
  10. 	if (a>b)printf("Первое введеное число больше второго");
  11. 	else
  12. 		{
  13. 			h=(b-a)/n;
  14. 			f=0;				
  15. 			for(int i=1;i<=n;i++)
  16. 				{
  17. 					f+=(a+(i-0.5)*h)/(1+((a+(i-0.5)*h)*(a+(i-0.5)*h)));
  18. 				}
  19. 			printf("%le  ",f*h);
  20. 		}
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 3344KB
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stdin
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3
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6
stdout
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1.330323e+00
https://ideone.com/nQPBCF
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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