variables - what is this in C++? - 


int* i;  int * i;  int **i;

i know 

int *i;
represent pointer variable

spacing doesn't make difference, first 2 identical.

int** i;

is pointer pointer int.

for example, if i held pointer value, mean in memory starting @ address there pointer, time directly int, , if followed address then you'd find actual int number value.

int an_int = 3; int* p = &an_int; int** pp = &p;

this forms chain ala...

int** pp = &p ------> int* p = &an_int ------> int an_int = 3

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