c - Can I realloc from a position of the array? -

say declared array[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}. later want array[8] = {2, 3, 4, 5, 6, 7, 8, 9}.

dismiss first 2 elements. start on array[2]. reallocing array array[2].

i tried:

int *array=(int*)malloc(10*sizeof(int)); ...//do stuffs array=(int*)realloc(array[2],8*sizeof(int)); 

it didn't work. neither using &array[2], *array[2], nor creating auxiliary array, reallocing array auxarr free(auxarr).

can light?

you can realloc pointer memory block has been alloc'ed. can realloc(array), not array[2] since pointer location in middle of memory block.

you may want try memmove instead.

edit:in response thingywotsit's comment, after memomving data want front of array, can realloc drop off tail end.