[zoliky]

Charachter x in binary is: 01111000. This charachter use 7 bit: 1111000. right ?

This page: http://neonatus.net/C/ch03/ch03.htm write, the charachter x require 1 byte.
But I don't understand why number 500 is 2 byte. Someone explain this thing for me ?

I know 4 bit is a nibble and 8 bit is 1 byte.

[King Coder]

Originally Posted by zoliky

Charachter x in binary is: 01111000. This charachter use 7 bit: 1111000. right ?

01111000 is 8 bits
1111000 is 7 bits

When using c and c++ the size of each type is dependant upon your machine, but a char is normally 8 bits

This page: http://neonatus.net/C/ch03/ch03.htm write, the charachter x require 1 byte.

and that's correct. 8 bits = a byte

But I don't understand why number 500 is 2 byte. Someone explain this thing for me ?

It depends on the datatype. An int is 32 bits and a short int is 16 bits or two bytes. More bits = more storage space. A short int (2 bytes) storing the number 500 has more storage space than a char (8 bits) storing x.

Simply put, numeric types are larger and have more storage space than chars. A char is a single character and can't hold the number 500.

[zoliky]

thanks

[balkman]

if you take a look at the ascii table, all characters are represented as decimal numbers as well. These numbers only go up to 256, which is exactly what 8-bits is able to hold (0-255).

Any integer value that is greater than 255, must have more than 8 bits to represent it.