How does de-referencing a pointer after casting to int ** change the value to which it points?

How does de-referencing a pointer after casting to int ** change the value
to which it points?

References

Reference NO 1

http://stackoverflow.com/questions/13583092/how-does-de-referencing-a-pointer-after-casting-to-int-change-the-value-to-wh

Reference NO 2

http://boredzo.org/pointers/

Reference NO 3

http://www.cs.fsu.edu/~myers/cgs4406/notes/pointers.html

Reference NO 4

http://www.cplusplus.com/doc/tutorial/pointers/

Reference NO 5

http://www.tutorialspoint.com/ansi_c/c_pointing_data.htm

Reference NO 6

http://www.stanford.edu/~fringer/teaching/operating_systems_03/handouts/lecture9.pdf

Reference NO 7

http://www.codingunit.com/cplusplus-tutorial-pointers-reference-and-dereference-operators

Reference NO 8

http://en.wikibooks.org/wiki/C_Programming/Pointers_and_arrays