output sum of a range

#include <iostream>

int main() {
    int start, end, sum = 0;

    std::cout << "Enter the start of the range: ";
    std::cin >> start;

    std::cout << "Enter the end of the range: ";
    std::cin >> end;

    for (int i = start; i <= end; ++i) {
        sum += i;
    }

    std::cout << "The sum of the range from " << start << " to " << end << " is: " << sum;

    return 0;
}