2.2.14.1 Sets - boundaries

#include <iostream>
#include <set>

using namespace std;

void func(multiset <double > v, double start, double stop ){
    double s = 0.0;
if(v.upper_bound(stop) == v.end()||v.lower_bound(start)==v.end()) {
    cout << "Not found ";
}else {
    for (auto i = v.lower_bound(start); i != v.upper_bound(stop); i++) {
        s += *i;
    }
    cout << s << " ";
}
}

int main() {

    multiset <double> valuesA = { 1.1, 1.1, 2.3, 2.7, 2.9, 3.5 };
    multiset <double> valuesB = { 2.5, 2.5, 2.7, 3.14, 3.5, 3.5, 4.5 };
    double start_value, stop_value;
    cin >> start_value;
    cin >> stop_value;

    func(valuesA,start_value,stop_value);
    func(valuesB,start_value,stop_value);

    return 0;
}