Phone Tax v1.0

#include <iostream>
#include <iomanip>
#include <string>
#include <cmath>
#include <sstream>

using namespace std;

int main() {

    const double tax = 4;
    const double vat = 0.25;
    const double disc1 = 0.35;
    const double disc2 = 0.85;
    const double hStart = 8;
    const double hEnd = 18.5;
    double priceTotal, mTotal, mFullTax=0, mNoTax;
    double h1, m1, h2, m2, h1m1, h2m2;

    //Input

    string input1, input2;

    getline(cin, input1);

    int pos1 = input1.find(":");
    input1.replace(pos1, 1, " ");

    istringstream iss(input1);
    iss >> h1 >> m1;
    iss.clear();

    getline(cin, input2);

    int pos2 = input2.find(":");
    input2.replace(pos2, 1, " ");

    iss.str(input2);
    iss >> h2 >> m2;
    iss.clear();

    //Calculate

    h1m1 = (h1 + (m1 / 60));
    h1m1 = (ceil(h1m1 * 100) / 100);
    h2m2 = (h2 + (m2 / 60));
    h2m2 = (ceil(h2m2 * 100) / 100);

    for(double i = h1m1; i <= h2m2; i += 0.01) {
        if(i > hStart && i < hEnd) {
            mFullTax++;
        }
    }

    mFullTax = ((mFullTax * 60) / 100);
    mTotal = (((h2 - h1) * 60) + (m2 - m1));
    mNoTax = (mTotal - mFullTax);

    priceTotal = ((mFullTax * tax) + ((mNoTax * tax) * disc1));

    if(mTotal > 30) {
        priceTotal *= disc2;
    }

    priceTotal = (priceTotal + (priceTotal * vat));

    //Output

    cout << "Start: " << h1 << ":" << m1 << endl;
    cout << "End:   " << h2 << ":" << m2 << endl;
    cout << fixed << setprecision(2) << "Cost:  " << priceTotal << " kr" << endl;

    return 0;
}