Vaja_9

// vaja_9.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include "pch.h"
#include <iostream>

using namespace std;

float f(float x) {

	return pow(x, 2) + sin(x) + pow(x, 3);
}

float integrate(float a, float b, float h = 0.005) {
	float result = 0;
	for (float x = a; x < b; x+=h) {
		result += (f(x) + f(x + h)) / 2 * h;
	}

	return result;
}

int main()
{
	float result = 0;
	int a;
	int b;
	int h = 0.005;

	cin >> a;
	cin >> b;
	cout << "H: " << integrate(a, b);

}

/*
i(x) = SUM (a do b) = (f(x)+f(x+i))/2 * h
h = x(i+1) - x(i)

n = (b-a) / h
*/