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  1. #include<math.h>
  2. #include<stdio.h>
  3.  
  4. double func(double u)
  5. { double a;
  6.   a = ((sin(u))/(sqrt(u)));
  7.   return a;}
  8.  
  9. int main()
  10.     {
  11.     int i, N;
  12.     double sum, u, a, b, h, Fa, Fb, F;
  13.  
  14.     printf("Enter value of N\n");
  15.     scanf("%d" ,&N);
  16.  
  17.     a=0.01;
  18.     b=1000;
  19.  
  20.     h=(b-a)/(N-1);
  21.  
  22.     sum=0;
  23.     F=func(a);
  24.     u=a;
  25.  
  26.     for(i=0; i<N; i++)
  27.     {
  28.             sum=sum+F;
  29.             u=u+h;
  30.             F=(func(u));
  31.     }
  32.  
  33.     Fa=func(a);
  34.     Fb=func(b);
  35.  
  36.     sum=sum-(0.5*Fa)-(0.5*Fb);
  37.     sum=sum*h;
  38.  
  39.     printf("I: %lf\n", sum);
  40.     return 0;
  41. }
Success #stdin #stdout 0s 2012KB
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stdin
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10000
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Enter value of N
I: 1.231548
https://ideone.com/Xibrov
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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