How to find the size of integer array

Question

How to find the size of an integer array in C   Any method available without traversing the whole array once  to find out the size of the array

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If array is static allocated   size t size   sizeof arr    sizeof int     if array is dynamic allocated heap    int  arr   malloc sizeof int    size     where variable size is a dimension of the arr

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int len sizeof array  sizeof int     Should work

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msize array  in Windows or malloc usable size array  in Linux should work for the dynamic array  Both are located within malloc h and both return a size t

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If the array is a global  static  or automatic variable  int array 10     then sizeof array  sizeof array 0   works     If it is a dynamically allocated array  int  array   malloc sizeof int  10    or passed as a function argument  void f int array      then you cannot find its size at run-time  You will have to store the size somewhere  Note that sizeof array  sizeof array 0   compiles just fine even for the second case  but it will silently produce the wrong result

[c] How to find the size of integer array

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