It's the C syntax I have to get used to that I don't have time for tonight.
I think it'll work like this:
1) User inputs day via letter eg. M for monday, T for tuesday etc.
2) User inputs start time in 24hr format eg. 13:20
3) User inputs end time in 24hr format eg. 13:34
4) Program calculates cost based upon table for discounts
5) Displays total cost, the day and call length
6) Asks whether to loop, if so then back to step1
7) Calculates total summary analysis with no# of calls and total call durations and total cost of all calls
8) Finished
