extern array definition

This is a discussion on extern array definition within the C Programming forums, part of the General Programming Boards category; Problem: FILE1.C: Code: int foo[100]; FILE2.C: Code: extern int foo[20]; foo[30]=1; Will the size in FILE2.C be ignored since the ...

  1. #1
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    extern array definition

    Problem:

    FILE1.C:
    Code:
    int foo[100];
    FILE2.C:
    Code:
    extern int foo[20];
    foo[30]=1;

    Will the size in FILE2.C be ignored since the allocation is 100 not 20?

  2. #2
    moi
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    try compiling it and see what happens.

    i honestly don't know the result on this one, although i'm guessing it will print an error in file2.c; because it doesnt know whats in file1.c when it's assembling file2.c. and even if there is no error there there might be errors when you run the linker or your compiled program.
    hello, internet!

  3. #3
    and the hat of int overfl Salem's Avatar
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    > Will the size in FILE2.C be ignored since the allocation is 100 not 20?
    Yes

    Normally, I would write
    extern int foo[];

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