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#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>
using namespace std;
double cost(string start, string end);
double minutes(int startHour, int startMinute, int endHour, int endMinute);
bool errorCheck(int startHour, int startMinute, int endHour, int endMinute);
void ringpling();
int main()
{
int input;
cout << "Put in the integer 1: ";
cin >> input;
if(input==1)
ringpling();
else
return 0;
}
void ringpling()
{
while (true)
{
char again = 0;
string callStart,callEnd;
cout<<"give start time of call: ";
getline(cin, callStart);
cout<<"give end time of call: ";
getline(cin, callEnd);
cout<<cost(callStart,callEnd)<<" kr";
cout<<endl<<"run again? (y/n): ";
cin>>again;
cin.get(); /// somehow cin>> will push the carriage return into the next getline() if I don't do this
switch(again)
{
case 'y':
case 'Y':
continue;
default:
return;
}
}
}
double cost(string start, string end)
{
/////////// consants given in minute format where possible
int startHour = 0;
int startMinute = 0;
int endHour = 0;
int endMinute = 0;
const double moms = 1.25;
const double pricePerMin = 4*moms;
//////////// make useable numbers from input
start.replace(start.find(":"), 1, " "); // replace : with whitespace
end.replace(end.find(":"), 1, " ");
istringstream iss(start); // for making it to a number
iss >> startHour >> startMinute; // it automatically finds whitespace separator
iss.clear(); // using the same again
iss.str(end);
iss >> endHour >> endMinute;
//////////////////// make sure data is OK before making calculations.
if (errorCheck(startHour,startMinute,endHour,endMinute))
return 0;
//////////////////// calculations
/// find the total cost and return it
return minutes(startHour,startMinute,endHour,endMinute)*pricePerMin;
}
////////////////////////////
/////// function to make sure we have OK data input
bool errorCheck(int startHour, int startMinute, int endHour, int endMinute)
{
// check if call ends before it start, or if it is out of 24hr clock
if ((((startHour * 60) + startMinute) >= ((endHour * 60) + endMinute))||startHour>23||startHour<00||endHour>23||endHour<00||startMinute>60||startMinute<00||endMinute>60||endMinute<00) // >= because we cant do anything with 0 minute calls anyway
{
cout << "time error!!!";
return true;
}
else
return false;
}
//////////////////////
//// calculations function
double minutes(int startHour, int startMinute, int endHour, int endMinute)
{
const int minute = 1;
const double discountMin = 0.35;
const int fullPriceStart = 8*60;
const int fullPriceEnd = 18*60+30;
const int discountIf = 30;
const double discount = 0.15;
double newMinutes = 0;
/// all calculations are done in minutes
int startInMinutes = startHour * 60 + startMinute;
int endInMinutes = endHour * 60 + endMinute;
/// count minutes. for each discount minute count 0.35 minutes
for (int i=startInMinutes;i<endInMinutes;i++)
{
if (i >= fullPriceStart && i < fullPriceEnd)
newMinutes += minute;
else
newMinutes += discountMin;
}
/// check if call was longer than 30 minutes and apply discount.
if (endInMinutes-startInMinutes>discountIf)
{
newMinutes -= newMinutes*discount;
}
return newMinutes;
}
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