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Asked: 2026-06-13T11:22:05+00:00

Hi i have a question about the following code fragment writen in true C

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Hi i have a question about the following code fragment writen in true C language

    volatile double samp[256];

When i trying to compile it gcc gave me a followed warrning:

    array 'samp' assumed to have one element

My question is that C++ array declaration style is correct in true C?

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1 Answer

  1. Editorial Team

    The language “assumed to have one element” is from Technical Corrigendum 1 to ISO/IEC 9899:1990 (C90):

    If at the end of the translation unit containing
    int i[];
    the array i still has incomplete type, the array is assumed to have one element. This element is initialized to zero on program startup.

    This indicates that you have declared an array without an array bound:

    volatile double samp[];

    You should check all the definitions of samp.

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