c - Questions about void pointers -

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i have 2 questions void pointers; have:

void * foo=malloc(99)  void **bar=(void**)malloc(99);  int i=1; bar++; *bar = foo;

1.is above equivalent following?

bar[i++] = foo;

if yes it's unexpected because bar++; moves double pointer forward , not single pointer, different non void types.

2.why fine return void** void * foo();?

for example: 

 void * foo(){      void ** bar;      return bar;  }

1.is above equivalent following?

bar[i++] = foo;

if yes it's unexpected because bar++; moves double pointer forward , not single pointer, different non void types.

it's fine because bar pointer array of pointers. size of void* known (it's size of pointer), know next element of void** array is.

2.why fine return void** void * foo();?

because void* pointer anything. pointer pointer pointer anything, void** can implicitly converted void*.


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