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Question Number 15311 by arnabpapu550@gmail.com last updated on 09/Jun/17

In a toll-booth at a bridge , some cars can pass by paying a tax of Rs. 10 and some special vehicles are exempted from paying tax. The booth has to track number of vehicles and total tax collected. Define a class ′tollbooth′. It should contain two data items of type int to hold the number of cars and total tax connected. A constructor initalizes these two variable to zero. A memberfunction freecar() only increments the car total. Finally another memberfunction show() displays the two totals. Write a C++ program such that the user has to press the key ′T′ for printing number of taxable cars and total tax, ′F′ for printing number of free cars and ′Esc′ to exit.

$$\mathrm{In}\:\mathrm{a}\:\mathrm{toll}-\mathrm{booth}\:\mathrm{at}\:\mathrm{a}\:\mathrm{bridge}\:,\:\mathrm{some}\:\mathrm{cars}\:\mathrm{can}\:\mathrm{pass}\:\mathrm{by}\:\mathrm{paying}\:\mathrm{a}\:\mathrm{tax}\:\mathrm{of}\:\mathrm{Rs}.\:\mathrm{10}\:\mathrm{and} \\ $$$$\mathrm{some}\:\mathrm{special}\:\mathrm{vehicles}\:\mathrm{are}\:\mathrm{exempted}\:\mathrm{from}\:\mathrm{paying}\:\mathrm{tax}.\:\mathrm{The}\:\mathrm{booth}\:\mathrm{has}\:\mathrm{to}\:\mathrm{track}\: \\ $$$$\mathrm{number}\:\mathrm{of}\:\mathrm{vehicles}\:\mathrm{and}\:\mathrm{total}\:\mathrm{tax}\:\mathrm{collected}.\:\mathrm{Define}\:\mathrm{a}\:\mathrm{class}\:'\mathrm{tollbooth}'.\:\mathrm{It}\:\mathrm{should}\:\mathrm{contain} \\ $$$$\mathrm{two}\:\mathrm{data}\:\mathrm{items}\:\mathrm{of}\:\mathrm{type}\:\mathrm{int}\:\mathrm{to}\:\mathrm{hold}\:\mathrm{the}\:\mathrm{number}\:\mathrm{of}\:\mathrm{cars}\:\mathrm{and}\:\mathrm{total}\:\mathrm{tax}\:\mathrm{connected}. \\ $$$$\mathrm{A}\:\mathrm{constructor}\:\mathrm{initalizes}\:\mathrm{these}\:\mathrm{two}\:\mathrm{variable}\:\mathrm{to}\:\mathrm{zero}.\:\mathrm{A}\:\mathrm{memberfunction}\:\mathrm{freecar}\left(\right)\:\mathrm{only} \\ $$$$\mathrm{increments}\:\mathrm{the}\:\mathrm{car}\:\mathrm{total}.\:\mathrm{Finally}\:\mathrm{another}\:\mathrm{memberfunction}\:\mathrm{show}\left(\right)\:\mathrm{displays}\:\mathrm{the} \\ $$$$\mathrm{two}\:\mathrm{totals}. \\ $$$$\:\:\:\mathrm{Write}\:\mathrm{a}\:\mathrm{C}++\:\mathrm{program}\:\mathrm{such}\:\mathrm{that}\:\mathrm{the}\:\mathrm{user}\:\mathrm{has}\:\mathrm{to}\:\mathrm{press}\:\mathrm{the}\:\mathrm{key}\:'\mathrm{T}'\:\mathrm{for} \\ $$$$\mathrm{printing}\:\mathrm{number}\:\mathrm{of}\:\mathrm{taxable}\:\mathrm{cars}\:\mathrm{and}\:\mathrm{total}\:\mathrm{tax},\:'\mathrm{F}'\:\mathrm{for}\:\mathrm{printing}\:\mathrm{number}\:\mathrm{of}\:\:\mathrm{free} \\ $$$$\mathrm{cars}\:\mathrm{and}\:'\mathrm{Esc}'\:\mathrm{to}\:\mathrm{exit}. \\ $$

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