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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7.     double a = 0.0;
  8.     double b = 1.57;
  9.     int n = 10;
  10.  
  11.     double dx = (b - a) / n;
  12.     double s = 0.0;
  13.  
  14.     for (int i = 0; i < n; i++) {
  15.         double x = a + (i + 0.5) * dx; // środek prostokąta
  16.         s += dx * sin(x);
  17.     }
  18.  
  19.     cout << "Przyblizona wartosc pola (metoda prostokatow) = " << s << endl;
  20.  
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
Standard input is empty
stdout 
Przyblizona wartosc pola (metoda prostokatow) = 1.00023
https://ideone.com/XFjNDh
language:
C++ (gcc 8.3)
created:
11 hours ago
visibility:
public

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