Linked Lists & Pointers

This is a discussion on Linked Lists & Pointers within the C Programming forums, part of the General Programming Boards category; I am currently reading a tutorial so that I can do a homework assignment my lecturer gave me based on ...

  1. #1
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    Linked Lists & Pointers

    I am currently reading a tutorial so that I can do a homework assignment my lecturer gave me based on pointers, structures and for a single linked list.

    I have to implement these concepts intot hte homework, whereby I have to accept data (about a student's profile, like name, age, and such...) and then print them out.

    I have created structures for the profile details. For example, last name and first name come under the Struct Name and so forth.

    However, I really need ideas on how to achieve utilising pointers. Can someone give me fresh new ideas?

    Also, I have been reading a tutorial on single linked list, and happened to come across some keywords I'm not famliar with.

    What is assert( ) for? Also, what is this variable type for ( i keep seeing it ) "size_t ? What is memcpy()?
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  2. #2
    Just Lurking Dave_Sinkula's Avatar
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    >What is assert( ) for?

    http://www.embedded.com/story/OEG20010311S0021
    http://www.embedded.com/story/OEG20010416S0090

    >Also, what is this variable type for ( i keep seeing it ) "size_t ?

    It "is the unsigned integer type of the result of the sizeof operator".

    >What is memcpy()?

    memcpy
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    ok, hm......wat is the difference between these 2 then?

    assert(Item != NULL) and if (NULL == *Item) ?

    Assuming Item is a pointer variable for a struct
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  5. #5
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    Item != NULL is true if Item is pointing to a memory location.

    NULL == *Item is true if the data pointed to by Item is NULL.
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