How many bytes does a Chinese character take up?

Chinese accounts for 3or4 bytes in utf-8.

Utf8 characters are variable-length characters, so here is a supplement to the encoding method of uft-8.

One byte: 0 * * * * *

Two bytes:110 * * *,10 * * *

Three bytes:11/kloc-0 * * *,10 * * *,10 * * *

Four bytes:1110,10 * * * *,10 * * * *.

Five bytes:1110,10 * * * *,10 * * * *.

Six bytes:11110, 10 * * *,10 * *.

So after getting the byte string, if you want to judge the byte length of UTF8 character, you only need to get the first byte of the character according to the above rules, and you can judge that the character is represented by several bytes according to its value.

GBK coding, a Chinese character takes up two bytes. UTF- 16 encoding, usually Chinese characters account for two bytes, and Chinese characters in CJKV extension B, extension C and extension D account for four bytes (the Unicode range of general characters is from U+0000 to U+FFFF, and these extensions are larger than U+20000, so two UTF- 16 are needed). UTF-8 encoding is variable length encoding. Usually, Chinese characters account for three bytes, and the Chinese characters after expanding B area account for four bytes.