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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.

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

Reprint Address: http://hi.baidu.com/thewillreigns/blog/item/67e665c4296e69c038db492d.html Char and unsigned char are unsignedBoth are used words as words that are indistinguishable, but when integers are used differently:Char integer range is-128

In C, it indicates a string. It does not have the string concept. Only char * and char [] can be used. In MFC, to serve string operations, a class CString is added, the header file of this class is afx. h.The conversion from char * To CString is

MySQL Char,varchar,text,blob is a few links but there are a lot of different types of fields, which is the basis of MySQL, but the foundation did not learn, bad to fill.Let's summarize briefly:Char: fixed length , maximum 255 charactersVARCHAR:

When calling a function, we often see that the acceptance parameter of a function is (const char *); For example, the strlen () function is defined: * So what are the benefits of setting the form parameter to const? The answer on the network is:

The following content is reproduced: http://www.cnblogs.com/Romi/archive/2012/03/12/2392478.html-----------------------------------QT below, strings are used qstring, it does give developers a convenience, think of the VC inside the various variable

Address: http://hi.baidu.com/gchrist/blog/item/29a138f533383e24bd310934.html   Environment: Dev cpp platform i386 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

A lot of beginners (including me, have been learning Java for more than a year) Ken will be on the char and byte two data types have doubts, confusion, today specially looked at a lot of data, the byte and char two types are summarized and compared,

A cstring variable CSTRA char * variable chHow to convert CSTR to ch? 1. Pass the const char * (lpctstr) pointer to the unallocated memory.Cstring CSTR (asdd );Const char * Ch = (lpctstr) CSTR;Ch points to the same address as CSTR. However, since