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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main (void)
  7. {
  8.         double a,b,x1,x2,f1,f2,dx,P=0;
  9.         int n=100;
  10.  
  11.         cout<<"podaj a :";
  12.         cin>>a;
  13.         cout<<"podaj b :";
  14.         cin>>b;
  15.  
  16.         dx=(b-a)/n;
  17.         x1=a;
  18.         x2=x1+dx;
  19.         f1=sin(x1);
  20.         f2=sin(x2);
  21.         for (int i=0; i<n; i++)
  22.         {
  23.         P=P+((f1+f2)*0.5*dx);
  24.         x1=x2;
  25.         x2=x1+dx;
  26.         f1=f2;
  27.         f2=sin(x2);
  28.         }
  29.         cout<<P;
  30. }
  31.  
Success #stdin #stdout 0.02s 2860KB
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stdin
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-1
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stdout
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podaj a :podaj b :9.97468e-16
https://ideone.com/CFI30
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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