(limit = 10)

(timeslot = 120s)

Please write your username in order to register products: user1  
Please write (product, quantity) you would like to register (press 'Enter' to quit): banana,2  
Product banana is now registered with 2 units  
leite,6  
Product leite is now registered with 6 units  
arroz,1   
Product arroz is now registered with 1 units  
agua,4  
Product amount limit reached for the time interval, only registered 1 units  
Please wait 99 seconds to add different products, or press 'Enter' to quit  
kiwi,5  
Product limit reached for the time interval  
Please wait 89 seconds to add different products, or press 'Enter' to quit  
kiwi,5  
Product limit reached for the time interval  
Please wait 55 seconds to add different products, or press 'Enter' to quit  
kiwi,5  
Product limit reached for the time interval  
Product kiwi is now registered  
  
Exiting...

  
(limit = 5)

(timeslot = 30s)

Please write your username in order to register products: user2  
Please write (product, quantity) you would like to register (press 'Enter' to quit): banana,2  
Product banana is now registered with 2 units  
banana,3  
Product banana is now registered with update amount ( +3 units)  
agua  
Invalid input, please write (product,amount). Exiting