4.2

// Laboration 4, Assignment_2.cpp
// Fabian Tjernström (fatj1700) 2018-12-09

#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;
    bool repeat = true;

    //Input

    while(repeat == true) {

        string input1, input2;

        cout << "Enter call start time [hh:mm]: ";
        cin >> input1;

        int pos1 = input1.find(":");

        if (pos1 < 1 || pos1 > 2) {
            cout << "Invalid Input!" << endl;
            return 0;
        }

        input1.replace(pos1, 1, " ");

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

        cout << "Enter call end time [hh:mm]: ";
        cin >> input2;

        int pos2 = input2.find(":");

        if (pos2 < 1 || pos2 > 2) {
            cout << "Invalid Input!" << endl;
            return 0;
        }

        input2.replace(pos2, 1, " ");

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

        if (m1 > 60 || m2 > 60 || m1 < 0 || m2 < 0) {
            cout << "Invalid Input!" << endl;
            return 0;
        }

        if (h1 > 24 || h2 > 24 || h1 < 0 || h2 < 0) {
            cout << "Invalid Input!" << endl;
            return 0;
        }

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

        //Repeat Program

        cout << "Repeat Program? [y/n]: ";
        char answer;
        cin >> answer;
        repeat = answer == 'y';
    }

    return 0;
}