Does this even remotely make sense

This is a discussion on Does this even remotely make sense within the C Programming forums, part of the General Programming Boards category; I have encountered a very very strange situation in this Code: //patches is a **ptr tmp_ptr=patches[0]+9; //when i printf'ed this ...

  1. #1
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    Exclamation Does this even remotely make sense

    I have encountered a very very strange situation in this
    Code:
    //patches is a **ptr
    tmp_ptr=patches[0]+9; //when i printf'ed this it said 0x3F0072
    
    tmp_ptr=patches[0]; //when i printf'ed this it said 0x3F002A
    //actually this last one is the correct one
    now can anyone come up with an explanation for why this happens

    I am using mingw btw

  2. #2
    Sweet
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    Why what happens? that you print out a memory address.
    Woop?

  3. #3
    and the hat of wrongness Salem's Avatar
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    Or do you mean why the +9 moves the address forwards 0x48 bytes?
    Well that's pointer arithmetic for you - it looks like whatever is being pointed to is 8 bytes in size.

    It's no use telling us something is a **variable without stating the type.

  4. #4
    Frequently Quite Prolix dwks's Avatar
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    Well that's pointer arithmetic for you - it looks like whatever is being pointed to is 8 bytes in size.
    A double, maybe?

    Is that the output you expected? Maybe you want to print **variable and not variable.
    dwk

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    thank you so much for pointing that out for me
    it is actually of type patch_entry which is a struct(8byte)

  6. #6
    Frequently Quite Prolix dwks's Avatar
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    Did you figure out what you wanted to figure out?
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


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    Projects: codeform, xuni, atlantis, nort, etc.

  7. #7
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    yes
    i was thinking the +9 would mean +9 bytes not patch_entry structs

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