To Project 3

# Source code for VendingMachine class
class VendingMachine

    def initialize	
        # Number of candy bars available in vending machine
        @n_candy_bars = 5
    
        # Number of quarters deposited for current purchase
        @n_quarters = 0
    end
    
    
    # Deposit a quarter to purchase a candy bar.
    # Three quarters are required for purchase.
    def deposit_quarter
        @n_quarters = @n_quarters + 1	    
    end
    
    def select_candy
        if @n_quarters == 3 && @n_candy_bars > 0
            puts 'Candy bar dispensed.'
            @n_quarters = 0
            @n_candy_bars = @n_candy_bars - 1
        else
            puts 'Could not dispense candy bar.'
        end
    end
    
    def print_status    	    
    	puts "Number of quarters for purchase is " + @n_quarters.to_s
    	puts "Number of candy bars remaining is " + @n_candy_bars.to_s
    end

end