What do numbers using 0x notation mean

Question

What does a 0x prefix on a number mean   const int shared segment size   0x6400    It s from a C program  I can t recall what it amounts to and particularly what the letter x means

User · Answer

In C and languages based on the C syntax, the prefix 0x means hexadecimal (base 16).

Thus, 0x400 = 4×(16²) + 0×(16¹) + 0×(16⁰) = 4×((2⁴)²) = 2² × 2⁸ = 2¹⁰ = 1024, or one binary K.

And so 0x6400 = 0x4000 + 0x2400 = 0x19×0x400 = 25K

User · Answer

SIMPLE  It s a prefix to indicate the number is in hexadecimal rather than in some other base  The C programming language uses it to tell compiler   Example    0x6400 translates to 6 16 3   4 16 2   0 16 1  0 16 0   25600  When compiler reads 0x6400  It understands the number is hexadecimal with the help of 0x term  Usually we can understand by  6400 16 or  6400 8 or any base     Hope Helped in some way   Good day

User · Answer

Literals that start with 0x are hexadecimal integers   base 16   The number 0x6400 is 25600   6   16 3   4   16 2   25600   For an example including letters  also used in hexadecimal notation where A   10  B   11     F   15   The number 0x6BF0 is 27632   6   16 3   11   16 2   15   16 1   27632 24576      2816        240         27632

User · Answer

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

User · Answer

It s a hexadecimal number      0x6400 translates to 4 16 2   6 16 3   25600

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

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