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Home/ Questions/Q 6932979
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Editorial Team
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Editorial Team
Asked: May 27, 20262026-05-27T11:46:25+00:00 2026-05-27T11:46:25+00:00

Let us say that I declare and initialize int a[3] = {1, 2, 3};

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Let us say that I declare and initialize

int a[3] = {1, 2, 3};

How can I later asisgn the entire array in one fell swoop? i.e.

a = {3, 2, 1};
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  1. Editorial Team
    Editorial Team
    2026-05-27T11:46:26+00:00Added an answer on May 27, 2026 at 11:46 am

    If your c compiler supports compound literals, you can use memcpy:

    memcpy(a, (int[]){3, 2, 1}, sizeof a);
    

    If you don’t plan to stick any variables in there (you can; isn’t C99 amazing?), (int[]) can be replaced by (const int[]) to put the literal into static memory.

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