Blockchain starting with X

1. Generally, x x means hexadecimal, that is, all the numbers followed by this string are hexadecimal
in C language, int type can be assigned an integer starting with X
for example,
int a = 0x1;

2.

The beginning of X indicates that the string of numbers is a hexadecimal number. Judging the base of a string of numbers can be done in the following ways:

< UL >

binary starts with 0b

octal starts with 0

hexadecimal starts with X

no prefix is decimal

3. I'll see you in the following:?;?; 3682827; 25259722; 2525968; 2525968; 2525968; 2525968; 25968; 25968; 25968; 25968; 数
2525968; 25968; 25968; 25968;
2525968; 25968; 数 数 数
2525968888888; 25ff;

4. It's not a big problem,
but you can also do without ox, such as A33. No ox means that it's also a hexadecimal number, and it's just to let people know it's a hexadecimal number more intuitively.

5.

The prefix of hexadecimal is x, the number zero and the letter X

Hexadecimal (English Name: hexadecimal) is a method of data representation in computer. It's different from the expression in our daily life. It consists of 0-9, A-F, and the letters are case insensitive. The corresponding relationship with 10 is: 0-9 corresponds to 0-9; A-F corresponds to 10-15; The number of n-base can be represented by the number of 0 ~ (n-1), and the letter A-F can be used for the number over 9

extended data:

decimal system, that is, carry counting system, is a counting method with carry defined artificially (there are counting methods without carry, such as the original rope counting method, the "positive" counting method commonly used in ticket singing, and the similar tally mark counting method)

for any kind of system -- X system, it means that the number operation in each position is carried forward every x bit. Decimal is every decimal one, hexadecimal is every hexadecimal into one, binary is every binary into one, and so on, X-ary is every x-carry

6. I've seen two kinds of hexadecimal symbols, 0x55 and 55h, and X hasn't noticed yet.

7. This kind of thing is generally conventional. A computer scientist slapped his head and wrote down a symbol on the blackboard, so we used it. Why not ask why ABC is not written ψБЭ， Why is QQ icon Penguin instead of bear??

8. This "x x" was stipulated when they created C language. If it is assembly language, it ends with H.

9. How to put it? Hexadecimal number can appear ABCDEF these six letters! Letters can also appear in octal and 32nd system. Letters will appear in all systems greater than 10, but only hexadecimal system is most commonly used in systems greater than 10
first of all, we need to understand that the six letters a, B, C, D, e and F in hexadecimal are no longer English letters, but six symbols with new meanings, representing different orders of magnitude
binary 0,1 can represent all numbers< In decimal system, 0,1,2,3,4,5,6,7,8,9 can be used to represent all numbers
all numbers are represented by 0,1,2,3,4,5,6,7,8,9, a, B, C, D, e and F in hexadecimal
all the bases greater than ten can be represented by 0,1,2,3,4,5,6,7,8,9 for the first ten orders of magnitude, but the latter can only be represented by non Arabic numerals, and the common English letters are applied here
supplement: 0x is the mainstream representation of hexadecimal number, which is used by mainstream programming software such as C and C + +; But it is not the only one. In the field of memory analysis, VB
and other programming software, other representation methods will be used.