#include <iostream>
using namespace std;

const int MAX_HHMM = 5;
const int MAX_DAY = 2;
void call_input(char time_of_call[]);
void time_text(bool start_or_finish);
void day_of(char day_of_week[]);
int main()
{

    char start_of_call[MAX_HHMM + 1];
    char end_of_call[MAX_HHMM + 1];
    char day_of_week[MAX_DAY + 1];

    cout << "This program will calculate long distance\n"
         << "-----------------------------------------\n\n";
    time_text(true);
    call_input(start_of_call);
    time_text(false);
    call_input(end_of_call);
    day_of(day_of_week);
    return 0;
}
void day_of(char day_of_week[])
{
    cout << "\nEnter a date"
         << "in the format of"
         << "\n Mon Tue Wed Thu Fri Sat Sun > ";
    cin >> day_of_week;
    day_of_week[sizeof(day_of_week) -1] = '\0';
    return;
}

void call_input(char time_of_call[])
{
    char yes_or_no[4] = "no";
    cin >> time_of_call;
    time_of_call[sizeof(time_of_call) - 1] = '\0';
    while(yes_or_no[0] != 'y' && yes_or_no[1] != 'e' && yes_or_no[2] !='s') {
        cout << "\nYour time was " << time_of_call
             << "\nIs this correct > ";
        cin >> yes_or_no;
        yes_or_no[sizeof(yes_or_no) -1] = '\0';
        if(yes_or_no[0] != 'y' && yes_or_no[1] !='e' && yes_or_no[2] !='s') {
            cout << "Enter the time again > ";
            cin >> time_of_call;
            time_of_call[sizeof(time_of_call) - 1] = '\0';
        }
    }
    return;
}

void time_text(bool start_or_finish)
{
    if (start_or_finish == true) {
    cout << "enter the time your call started HH:MM > ";
    }
    if (start_or_finish == false) {
    cout << "enter the time your call ended HH:MM > ";
    }
}