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Pointers

Grid - 1byte = 8bits

2^8 - 256

       Int  a; (43;44;45;46)
       Int  b; (           )
       Int *c; (60;61;62;63;64;65;66;67;68)[Contains Adress for a(43;44;45;46)[* = Dereferencing operator]
 |0|1|2|3|4|5|6|7|
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0| | | | | | | | |
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1| | | | | | | | |
------------------
2| | | | | | | | |
------------------
3| | | | | | | | |
------------------
4| | | |a|a|a|a| |
------------------
5| | | | | | | | |
------------------
6|c|c|c|c|c|c|c|c|
------------------
7| | | | | | | | |
------------------

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bc -l
2^8  = 256
2^16 = 65536
2^32 = 4294967296
2^64 = 18446744073709551616

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X64 0x0000000000000000

int = 4 bytes
short = 2 bytes