Get Unicode Value of a Character

Get unicode value of a character

You can do it for any Java char using the one liner here:

System.out.println( "\\u" + Integer.toHexString('÷' | 0x10000).substring(1) );

But it's only going to work for the Unicode characters up to Unicode 3.0, which is why I precised you could do it for any Java char.

Because Java was designed way before Unicode 3.1 came and hence Java's char primitive is inadequate to represent Unicode 3.1 and up: there's not a "one Unicode character to one Java char" mapping anymore (instead a monstrous hack is used).

So you really have to check your requirements here: do you need to support Java char or any possible Unicode character?

How can I get the Unicode value of a character in go?

Strings are utf8 encoded, so to decode a character from a string to get the rune (unicode code point), you can use the unicode/utf8 package.

Example:

package main

import (
    "fmt"
    "unicode/utf8"
)

func main() {
    str := "AÅÄÖ"

    for len(str) > 0 {
        r, size := utf8.DecodeRuneInString(str)
        fmt.Printf("%d %v\n", r, size)

        str = str[size:]
    }
}

Result:

65 1

197 2

196 2

214 2

Edit: (To clarify Michael's supplement)

A character such as Ä may be created using different unicode code points:

Precomposed: Ä (U+00C4)

Using combining diaeresis: A (U+0041) + ¨ (U+0308)

In order to get the precomposed form, one can use the normalization package, golang.org/x/text/unicode/norm. The NFC (Canonical Decomposition,
followed by Canonical Composition) form will turn U+0041 + U+0308 into U+00C4:

c := "\u0041\u0308"
r, _ := utf8.DecodeRune(norm.NFC.Bytes([]byte(c)))
fmt.Printf("%+q", r) // '\u00c4'

How can I get a Unicode character's code?

Just convert it to int:

char registered = '®';
int code = (int) registered;

In fact there's an implicit conversion from char to int so you don't have to specify it explicitly as I've done above, but I would do so in this case to make it obvious what you're trying to do.

This will give the UTF-16 code unit - which is the same as the Unicode code point for any character defined in the Basic Multilingual Plane. (And only BMP characters can be represented as char values in Java.) As Andrzej Doyle's answer says, if you want the Unicode code point from an arbitrary string, use Character.codePointAt().

Once you've got the UTF-16 code unit or Unicode code points, both of which are integers, it's up to you what you do with them. If you want a string representation, you need to decide exactly what kind of representation you want. (For example, if you know the value will always be in the BMP, you might want a fixed 4-digit hex representation prefixed with U+, e.g. "U+0020" for space.) That's beyond the scope of this question though, as we don't know what the requirements are.

Get unicode value of character

char ch='c';
int code = ch;
System.out.println(code);

OUTPUT:

99

just for escape char \ you have to use like char ch='\\';

C get unicode code point for character

In the first place, there are few corrections in your code.

#include <stdio.h>

int main()
{
char *a = "ā";
int n = 0; //Initialize n with zero.
while(a[n] != '\0')
{
    printf("%x", a[n]);
    n+=1;
}
//\u will not work. To print hexadecimal value, use \x
printf("\n %X\n\", 0xC481);
return 0;
}

Here, you are trying to print hex value of each byte. This will be not a Unicode value of character beyond 0xff.

unsigned short is the most common data structure used to store Unicode value although it cannot store all the code points. If you need to store all the Unicode points as it is, then use int which must be 32-bit.

Unicode value of a character is numeric value of each character when it is represented in UTF-32. Otherwise, you will have to compute from the byte sequence if encoding is UTF-8 or UTF-16.

How do you find the unicode value of a character in Julia?

I think you're looking for codepoint. From the documentation:

codepoint(c::AbstractChar) -> Integer

Return the Unicode codepoint (an unsigned integer) corresponding to the character c (or throw an exception if c does not represent a valid character). For Char, this is a UInt32 value, but AbstractChar types that represent only a subset of Unicode may return a different-sized integer (e.g. UInt8).

For example:

julia> codepoint('a')
0x00000061

To get the exact equivalent of Python's ord function, you might want to convert the result to a signed integer:

julia> Int(codepoint('a'))
97

How to get a char's unicode value?

The char type can be cast to u32 using as. The line

println!("{:x}", 'の' as u32);

will print "306e" (using {:x} to format the number as hex).

If you are sure all your characters are in the BMP, you can in theory also cast directly to u16. For characters from supplementary planes this will silently give wrong results, though, e.g. '' as u16 returns 0xf756 instead of the correct 0x1f756, so you need a strong reason to do this.

Internally, a char is stored as a 32-bit number, so c as u32 for some character c only reinterprets the memory representation of the character as an u32.

How to get unicode value of a character in kotlin?

Here is a program to convert char into Unicode. Note char.code is char.toInt() in old format

// Kotlin program to find Unicode value of a character
fun main(args: Array<String>) {
    // Unicode table at https://unicode-table.com/en/
    val char = '§'
   
    // Unicode logic
    val uni= String.format("u+%04x", char.code).uppercase()

    println("The Unicode value of $char is: $uni")
}

Here is a Github link to try https://github.com/vidyesh95/UnicodeValueInKotlin

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