Is the wchar _ t a string or a string?

@Jacob: a wchar_t is not a string, and it doesn't have a length. I assume you're asking about wchar_t*. Those asterisks aren't just for show, you know. They can't be left out without changing the meaning of the code (and the question) – jalf May 18 '10 at 2:29 @jalf thanks and sorry.
Also, can a CString be char or wchar _ t?
The char type of CString is internally based on TCHAR as well, so depending on if you are doing a Unicode build the internal representation of the CString will be either wchar_t or char. The CLI has no such type differentiation, String is always a wide character string.
Thereof, which is an example of a wchar _ t function? Syntax: wchar_t* wcstok (const wchar_t* str1, const wchar_t* delim, wchar_t ** ptr) ; Description: Function that helps in tokenizing the string that generated with the help of wide characters. A delimiter delim is also used for string tokenization. Examples of C++ wchar_t
Keeping this in consideration, when to return 1 or 0 in wchar _ t?
When the first string is compared with the second string, 1 is returned as the value of a first string is higher than the second. In the second case, 0 is returned because the string is compared with itself. At last, in the third case, -1 is returned as the value of the first string is less than the second.
Furthermore, what do char, wchar, char8 and char32 stand for?
The types char, wchar_t, char8_t, char16_t, and char32_t are built-in types that represent alphanumeric characters, non-alphanumeric glyphs, and non-printing characters. The char type was the original character type in C and C++.

20 Similar Question Found

What's the difference between wchar and wchar _ t in c?

wchar_t is a distinct type, defined by the C++ standard. WCHAR is non standard, and as far as I know, exists only on Windows. However, it is simply a typedef (or possibly a macro) for wchar_t, so it makes no practical difference.

How to find length of wchar _ t in c + +?

Please, how can I find out the length of a variable of type wchar_t* in c++? or #include <string> and use std::char_traits<wchar_t>::length (dimObjPrefix);. Thanks for contributing an answer to Stack Overflow!

Can a wchar _ t be ansi in c + +?

Also note that wchar_t* wcstring [len]; is NOT ANSI C++. That won't compile in most C++ compilers. If your compiler can deal with this, however, I guess you may continue doing that and you won't have to worry about a memory leak there. It should be that simple.

What are tchar, wchar, lpstr, lpwstr, etc?

What are TCHAR, WCHAR, LPSTR, LPWSTR, LPCTSTR (etc.)? Please Sign up or sign in to vote. Many Windows C++ programmers get confused over what bizarre data type identifiers like TCHAR and LPCTSTR are. Here, in brief, I will try to clear out the fog. Many C++ Windows programmers get confused over what bizarre identifiers like TCHAR, LPCTSTR are.

Why is the length of wchar _ t string wrong?

My issue is that the length returned by the function mbstowcs is correct but the length returned by the function wcslen, on the newly created wchar_t string, is not. Am I missing something here?

What is the meaning of the wchar _ t type?

Remarks. The wchar_t type is an implementation-defined wide character type. In the Microsoft compiler, it represents a 16-bit wide character used to store Unicode encoded as UTF-16LE, the native character type on Windows operating systems. The wide character versions of the Universal C Runtime...

Is the wchar _ t string the same as the char string?

To me the term wchar_t string is the same as C++ wide string, C++ wide char, C++ wchar, C++ wide character string, etc, which all come down to an array of wchar_t. The STL std::wstring class based on wchar_t characters is the wide version of the std::string class based on char characters.

How big is the wchar _ ton string in linux?

Unlike Windows UTF-16 2-byte wide chars, wchar_ton Linux and OS X is 4 bytes UTF-32 (gcc/g++ and XCode). On cygwin it is 2 (cygwin uses Windows APIs). At first I used runtime if statements like if( sizeof(wchar_t) == 4 )but aside from being bad style that led to compiler warnings in the code that was for the other size of wchar_t.

Can you make a wchar _ t string in cmarkup?

Since CMarkup requires a wchar_t based string class, a wide char build is not supported here. I took my cue from VC++ _T macros such as _tcscpy which switch based on the character set selected for the build. With CMarkup, you define MARKUP_WCHAR (or UNICODE) to compile for wide strings since otherwise it compiles for char strings.

What do char, wchar, char16 and char32 represent?

The types char, wchar_t, char16_t and char32_t are built-in types that represent alphanumeric characters as well as non-alphanumeric glyphs and non-printing characters. The char type was the original character type in C and C++. The type unsigned char is often used to represent a byte, which is not a built-in type in C++.

How big is the wchar string on linux?

A set of macros is defined accordingly with the wide versions of functions and types. Here are examples of defines for character, constant character pointer and string copy that are different based on MARKUP_WCHAR: Unlike Windows UTF-16 2-byte wide chars, wchar_t on Linux and OS X is 4 bytes UTF-32 (gcc/g++ and XCode).

Why do we use a wchar string in posix?

Why wchar? Using a wchar_t string (and STL std::wstring) on POSIX (Linux and OS X) has few advantages if any since nowadays a regular char string is in Unicode UTF-8 by default, including, I assume, most system functions, file paths, and programming interfaces.

What do char, wchar, char8 and char32 stand for?

The types char, wchar_t, char8_t, char16_t, and char32_t are built-in types that represent alphanumeric characters, non-alphanumeric glyphs, and non-printing characters. The char type was the original character type in C and C++.

How big is a wchar _ t in bytes?

Please note that char and wchar_t do not imply encoding, and gives no indication of size in bytes. For instance, wchar_t is commonly implemented as a 2-bytes data type and typically contains UTF-16 encoded data under Windows (or UCS-2 in versions prior to Windows 2000) and as a 4-bytes data type encoded using UTF-32 under Linux.

Is the wchar _ t a 16 bit codepoint?

A wchar_t is a 16 bit codepoint. Most likely codepoints are stored in little endian order on your machine because you can read the first 'character' which happens to be the ASCII codepoint for an upper case C while

Is there way to convert wstring to wchar _ t *?

There is no way to convert wstring to wchar_t* but you can convert it to const wchar_t* which is what answer by K.Kirsz says. This is by design because you can access a const pointer but you shouldn't manipulate the pointer. See a related question and its answers.

What is the function wprintf in wchar.h?

These functions are present in the wchar.h The wprintf() function is used to print the wide character to the standard output. The wide string format may contain the format specifiers which is starting with % sign, these are replaced by the values of variables which are passed to the wprintf().

When to use wchar and char in c + +?

WCHAR (or wchar_t on Visual C++ compiler) is used for Unicode UTF-16 strings. This is the "native" string encoding used by Win32 APIs. CHAR (or char) can be used for several other string formats: ANSI, MBCS, UTF-8.

Is the wchar _ t keyword a built in type?

If /Zc:wchar_t is on, wchar_t is a keyword for a built-in integral type in code compiled as C++. If /Zc:wchar_t- (with a minus sign) is specified, or in code compiled as C, wchar_t is not a built-in type. Instead, wchar_t is defined as a typedef for unsigned short in the canonical header stddef.h.

How to use wchar _ t, char16 _ t and char32 _ t?

In order to reduce the limit of wchar_t data type, in 2011, both C11 and C++11 (ISO/IEC 14882:2011) support 16-bit and 32-bit characters, suitable to be encoded using UTF-16 and UTF-32. In C, the header file <cuchar> defines two macro: char16_t and char32_t, which map to unsigned integral types of the appropriate size.