What is 0x10 in decimal

Question

I have the following code   SN get Chars 5    SN is a string so this should give the 5th Char  Ok   Now I have another code but  SN get Chars 0x10   I wonder what 0x10 is  Is it a number  If it s so  then what is it in decimal notation

User · Answer

The simple version is 0x is a prefix denoting a hexadecimal number, source.

So the value you're computing is after the prefix, in this case 10.

But that is not the number 10. The most significant bit 1 denotes the hex value while 0 denotes the units.

So the simple math you would do is

0x10

1 * 16 + 0 = 16

Note - you use 16 because hex is base 16.

Another example:

0xF7

15 * 16 + 7 = 247

You can get a list of values by searching for a hex table. For instance in this chart notice F corresponds with 15.

User · Answer

It s a hex number and is 16 decimal

User · Answer

0x means the number is hexadecimal  or base 16   0x10 is 16

User · Answer

0xNNNN  not necessarily four digits  represents  in C at least  a hexadecimal  base-16 because  hex  is 6 and  dec  is 10 in Latin-derived languages  number  where N is one of the digits 0 through 9 or A through F  or their lower case equivalents  either representing 10 through 15   and there may be 1 or more of those digits in the number  The other way of representing it is NNNN16   It s very useful in the computer world as a single hex digit represents four bits  binary digits   That s because four bits  each with two possible values  gives you a total of 2 x 2 x 2 x 2 or 16  24  values  In other words                                          bits                                                                                                                       ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----    bF   bE   bD   bC   bB   bA   b9   b8   b7   b6   b5   b4   b3   b2   b1   b0    ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----                                                                                          Hex digit           Hex digit           Hex digit           Hex digit   A base-X number is a number where each position represents a multiple of a power of X     In base 10  which we humans are used to  the digits used are 0 through 9  and the number 730410 is     7 x 103    700010   plus  3 x 102    30010   plus  0 x 101    010   plus  4 x 100    410   equals 7304      In octal  where the digits are 0 through 7  the number 7548 is     7 x 82    44810   plus  5 x 81    4010   plus  4 x 80    410   equals 49210    Octal numbers in C are preceded by the character 0 so 0123 is not 123 but is instead  1   64     2   8    3  or 83     In binary  where the digits are 0 and 1  the number 10112 is     1 x 23    810   plus  0 x 22    010   plus  1 x 21    210   plus  1 x 20    110   equals 1110      In hexadecimal  where the digits are 0 through 9 and A through F  which represent the  digits  10 through 15   the number 7F2416 is     7 x 163    2867210   plus  F x 162    384010   plus  2 x 161    3210   plus  4 x 160    410   equals 3254810    Your relatively simple number 0x10  which is the way C represents 1016  is simply     1 x 161    1610   plus  0 x 160    010   equals 1610    As an aside  the different bases of numbers are used for many things    base 10 is used  as previously mentioned  by we humans with 10 digits on our hands  base 2 is used by computers due to the relative ease of representing the two binary states with electrical circuits  base 8 is used almost exclusively in UNIX file permissions so that each octal digit represents a 3-tuple of binary permissions  read write execute   It s also used in C-based languages and UNIX utilities to inject binary characters into an otherwise printable-character-only data stream  base 16 is a convenient way to represent four bits to a digit  especially as most architectures nowadays have a word size which is a multiple of four bits  base 64 is used in encoding mail so that binary files may be sent using only printable characters  Each digit represents six binary digits so you can pack three eight-bit characters into four six-bit digits  25  increased file size but guaranteed to get through the mail gateways untouched   as a semi-useful snippet  base 60 comes from some very old civilisation  Babylon  Sumeria  Mesopotamia or something like that  and is the source of 60 seconds minutes in the minute hour  360 degrees in a circle  60 minutes  of arc  in a degree and so on  not really related to the computer industry  but interesting nonetheless   as an even less-useful snippet  the ultimate question and answer in The Hitchhikers Guide To The Galaxy was  What do you get when you multiply 6 by 9   and  42   Whilst same say this is because the Earth computer was faulty  others see it as proof that the creator has 13 fingers  -

User · Answer

Notice that  10  is the representation of the base in that base   10 is 2 decimal  in base-2  10 is 3 decimal  in base-3       10 is 10 decimal  in base-10       10 is 16 decimal  in base-16  hexadecimal        10 is 1024 decimal  in base-1024     and so on

[c#] What is 0x10 in decimal?

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