[character set 7] what are the wide character codes and multi byte codes of Chinese characters

One 、 The nature of wide and multibyte characters

stay windows The system is set up utf8 when ,char It uses utf8 Character set , When not set ,char Used gbk Character set . And below char Is the use of the gbk Character set .

char ch[] = “ I ”;
wchar_t wch[] = L" I ";.

• Multibyte characters are gbk character
• Wide byte characters are Unicode character
• remarks ： We know gbk Is a multibyte character , As for why to convert to wide characters , Namely Unicode code , It may be the default .

Two 、 What are the wide character codes and multi byte codes for Chinese characters

• gbk:GBK code 、 Chinese character coding GBK code （ Complete code table attached ）
  • Chinese characters “ I ”：CED2 It's hexadecimal . The corresponding decimal system is 52946.

• Unicode: https://unicode-table.com/cn/
  • Chinese characters “ I ”：6211 It's hexadecimal . The corresponding decimal system is 25105.

  

3、 ... and 、demo

#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#define BUFFER_SIZE 50
using namespace std;

int main()
{
    
	setlocale(LC_ALL, "chs");
	
	char mbyte[50];
	wchar_t * wbyte =NULL;

	strcpy(mbyte, " I ");
	size_t mlen = strlen(mbyte);

	int dSize = mbstowcs(wbyte, mbyte, 0) + 1;

	wbyte = new wchar_t[dSize];
	wmemset(wbyte, 0, dSize);

	int len = mbstowcs(wbyte, mbyte, mlen);

	cout << &mbyte<<endl;
	wcout << &wbyte << endl;

	cout << mbyte << endl;
	wcout << wbyte << endl;

	return(0);
}

• Output

00F3F984
00F3F978
I
I

remarks ：00F3F978 Is the pointer address , You should look at the address pointed to by the pointer . As shown in the figure below, the value is 0x013107E8. Address 0x013107E8 The value stored in is 6211（ Here's the picture ）

• View Chinese characters “ I ” Of gbk The code value is CED2（ Hexadecimal ）、Unicode The encoding value of 6211（ Hexadecimal ）

https://blog.csdn.net/u010025662/article/details/54933530