difference between string and char

Comparison of data typesChar represents a fixed length, and the longest n-word varchar represents the actual length of the data type, such as: if it is a char type, when you enter a character that is less than the length, then a space is added, but

First, start One of the troubling questions today is the difference between Char and signed char, unsigned char. between two or three people 1.ANSI C provides 3 character types, namely Char, signed char, and unsigned char. Instead of just two types

There are many C procedures, in the communication with the new members of the project found that generally for Char *s1 and Char s2[] know there are misunderstandings (think no difference), resulting in sometimes "difficult to understand" error. A

About wchar_t In the C ++ standard, wchar_t is a wide character type. Each wchar_t type occupies 2 bytes and has a 16-bit width. Wchar_t is required for the representation of Chinese characters. Char, we all know, occupies a byte, 8-bit width.

Oracle defines string types VARCHAR2 and char specify the length of the usage as follows:VARCHAR2 ( ) is a number between 1~4000 that represents up to 4000 bytes of storage space.char ( ) is a number between 1~2000 that represents up to 2000 bytes

1 The nature of the array An array is a collection of multiple elements that are distributed in memory in an address-connected cell, so that you can access elements of different cells by its subscript. 2 pointers. A pointer is also a

Char varchar varchar2 the difference http://blog.csdn.net/honglei_zh/article/details/7172538Difference:1. The length of the char is fixed, and the length of the VARCHAR2 is changeable, for example, storing the string "abc", for Char (20), which

Original URL: The difference between char and varchar in http://www.jb51.net/article/23575.htmmysql font: [Increase decrease] type: reprinted in MySQL tutorial the difference between char and varchar,  are used to store strings, except that they are

Character values of Type unsigned char have a range from 0 to 0xff hexadecimal. A signed Char has range 0x80 to 0x7f. these ranges translate to 0 to 255 decimal, and-128 to + 127 decimal, respectively. the/J compiler option changes the default from

Original: http://www.blogbus.com/kavine-logs/29243638.htmlToday in the writing of a few small functions, half-day adjustment, long-term non-use of C + + knowledge is almost forgotten, hurriedly pick up to deal with the upcoming candidates.void Main (