#include <stdio.h>

/*
 * Ra"cunamo integral funkcije f(x) = x^2 + 5x + 3 na intervalu [0, 10].
 */

int main(void) {
  double korak = 0.001;
  double pl=0, y, x;
  
  for (x=0.0; x<10.0; x+=korak) {
    y = x*x + 5*x + 3;
    pl += y * korak;
  }
  printf("pl = %lf\n", pl);
  
  return 0;
}