SyntaxFix

[c] What do numbers using 0x notation mean?

The numbers starting with 0x are hexadecimal (base 16).0x6400 represents 25600.

To convert,

  • multiply the last digit times 1
  • add second-last digit times 16 (16^1)
  • add third-last digit times 256 (16^2)
  • add fourth-last digit times 4096 (16^3)
  • ...and so on

The factors 1, 16, 256, etc. are the increasing powers of 16.

0x6400 = (0*1) + (0*16^1) + (4*16^2) + (6*16^3) = 25600

or

0x6400 = (0*1) + (0*16) + (4*256) + (6*4096) = 25600

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