ascii | 易学教程

What does ADD al, '0' do, and why use it before printing an integer digit?

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问题 I am a novice in assembly language programming I searched for binary search program and found this and I tried understand the program. It's working fine but I couldn't understand the success part of the code: what is ADD al,'0' and what is mov res,al ? .model small .stack 100h .data ARR DW 1000H,2000H,3000H,4000H,5000H,6000H LEN DW ($-ARR)/2 KEY EQU 2000H SUC DB "KEY IS FOUND AT$" FAILURE DB "KEY IS NOT FOUND$" RES DB "POSITION",13,10,"$" .CODE START: MOV AX,@data MOV DS,AX MOV BX,00 ;LOW MOV

How can I sort a string with integers in Java?

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问题 I have got an array. Each space in my array holds two strings (one string contains just letters, the other one numbers). What I am trying to do now is to sort the array either alphabetically or numerically (depending on which space in the array is chosen). To do that, I am using the compareTo() method. However, I found that when I try to sort the array according to the numbers, it actually does not really work. My guess is, that since Java handles strings with the ascii codes, numbers don't

How to get ASCII value of characters in C#

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问题 Below is my string in C# which I am converting it to Character array & in need to get the ASCII value of each character in the string. static void Main(string[] args) { string s = "Test"; var arr = s.ToCharArray(); foreach(var a in arr) { var n = Encoding.ASCII.GetByteCount(a.ToString()); Console.WriteLine(a); Console.WriteLine(n); } } This outputs as T 1 e 1 s 1 t 1 On googling I got number of links but none of them suffice my need. How to get ASCII value of string in C# https://www

ASCII control character html input text

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问题 I'm trying to process input from a barcode scanner in a javascript browser app. The scanner output is a string of characters, which also contains at least one Group Separator character (ASCII 29). When I direct the input to i.e. notepad++, the input is displayed correctly including the Group Separator characters. When I direct the input into a <input type="text"> html field, the Group Separator objects are lost; it's neither visible in the field, nor detectable with javascript code. Does the

Clearing the screen by printing a character?

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问题 I'm using chez-scheme and I can't find a way to clear the screen completely. (If someone knows a better way than printing I'd be interested in that too but it's not my question here) From what I can find clearing the screen by ^L (control-L) or giving the clear command (in bash at least) is equivalent to outputting ASCII character 12: Form feed . However, printing this does nothing. If I use (display (integer->char 12)) it just prints a newline . Another way to encode this character is \f

How can I merge two ASCII characters? [closed]

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问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last month . I want to merge two characters and print them via a single variable by using ASCII (refer to the image below): [1]: https://i.stack.imgur.com/TWodP.jpg 回答1: try this if your machine is little endian unsigned int C = (b << 8) | a; printf("%s",&C); otherwise if your machine is big endian try unsigned

How to convert ascii char to byte in c#

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问题 Hello I have a problem with conversion from ASCII to Byte. I have the code: byte M = Convert.ToByte('M'); but this converts from UTF-16 to byte with I don't want. In my problem I would like to send bytes with ASCII codes. 回答1: just tell the compiler to convert the char to byte: byte b = (byte)'M'; or (see comment of Adwaenyth above) byte b = Encoding.ASCII.GetBytes("M")[0]; b will have the value 77 (ASCII for M). Or for a string: byte[] b2 = Encoding.ASCII.GetBytes("text"); 回答2: Why not use

javascript alt/fancy text generation [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . I am trying to understand how alt text/fancy text generation works. When I say alt text/fancy text, I mean: text like: 𝕖𝕩𝕒𝕞𝕡𝕝𝕖 𝕥𝕖𝕩𝕥 (Source) I've been searching for 40 minutes but I can't find anything on this. I am trying to make something in JavaScript, but I don't even know how

javascript alt/fancy text generation [closed]

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PHP trim()函数详解

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定义 trim - 去除字符串里的空白符及其他指定字符 Strip whitespace (or other characters) from the beginning and end of a string 描述 trim ( string $str [, string $character_mask = " \t\n\r\0\x0B" ] ) : string 参数 character_mask 可指定任意字符，使用..可指定一个范围默认去除下面五个字符 " " (ASCII 32 (0x20)), an ordinary space - 普通空白符. "\t" (ASCII 9 (0x09)), a tab - 制表符. "\n" (ASCII 10 (0x0A)), a new line (line feed) - 换行符. "\r" (ASCII 13 (0x0D)), a carriage return - 回车符. "\0" (ASCII 0 (0x00)), the NUL-byte. "\x0B" (ASCII 11 (0x0B)), a vertical tab - 垂直制表符. 示例 trim($text, " \t."); trim($hello, "Hdle"); // (from 0 to 31 inclusive) trim($binary, "