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I was following this tutorial about how the "double pointer" works.
Let me quote the relevant passage:
int i = 5, j = 6, k = 7;
int *ip1 = &i, *ip2 = &j;
Now we can set
ipp = &ip1;
and ipp points to ip1 which points to i. *ipp is ip1, and **ipp is i, or 5. We can illustrate the s...