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lang-c
sizeof(vec)won't work like you think it will. Arrays degrade to pointers when passes as a function, so that line will be the same assizeof(int *)- not what you want.int[] gridtoint *gridyou can as well use a static initializer in C99 and forget all the nonsense above:struct Grid testgrid = {1, 3, (int[3]){4, 5, 6}};(sorry for reviving but this trivial solution should be mentioned ...)