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So the first requirement is definitely pertinent. Members of the gym shall

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be able to access their training programs. It's pretty normal for members of

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the gym to have a training program. And therefore, the system should allow

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them to access them. Similarly for the second one. The system shall be

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able to read member cards. Normally when you get into a gym

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if you have a member card, you'll have to either show it to

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somebody, or nowadays swipe it, and so the system should be able to

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recognize the customer given the card.

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The third requirement is probably not pertinent,

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because I cannot think of any meaningful case in which the system

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should know what is the members' commute time. The fourth requirement, personal

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trainers shall be able to add clients, is also probably pertinent. Assuming

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that we have personal trainers in the gym, and they should be

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able to get clients, to work with the clients of the gym,

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and therefore, they should be able to add them as their clients

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to the system. And finally, the last requirement, the list of members

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shall be stores as a linked list. This is really something about

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the how, more than the what. And therefore, for what we say before

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is probably not a pertinent requirement, so we're not going to mark this one.