Please explain what this code is doing (someChar - 48)
2012年9月19日 · As mentioned, the original - 48 code assumes that the character encoding used is ASCII. - '0' not only improves readability, but also waives the ASCII assumption, and will …
Difference between binary zeros and ASCII character zero
2013年7月31日 · The quick answer is that the character '0' is represented in binary data by the ASCII number 48. That means, when you want the character '0' , the file actually has these …
c# - Console.ReadLine add 48 to int - Stack Overflow
2012年2月6日 · The ASCII codes for the numbers are being printed. Note that Console.Read() reads the next character from the standard input and returns an int. So, when you input …
For some reason, 48 is being added to this variable?
2021年11月14日 · When you print a char with cout it is treated as a character, but when you use it in arithmetic it is treated as a number. 48 is the ASCII code for the character '0' 49 is the ASCII …
Why does subtracting '0' in C result in the number that the char is ...
So if 0 was 48, 1 will be 49, 2 will be 50 etc.. in ASCII, then x would contain, ascii value of '9' minus the ascii value of '0' which means, ascii value of '9' would be 57 and hence, x would …
Why the ASCII value of a digit character is equal to the value plus …
2013年2月12日 · ASCII value is a position number of a symbol in the table. So you use '0' symbol position number as an offset of the digit symbols, adding an integer digit value to it you can …
Difference between converting int to char by (char) and by ASCII
2017年8月16日 · ASCII 48 is zero (0) and the digits all appear in the ASCII table in order after that. So 48+5 lands on 53 (which represents the character '5'). In C++ char is a integer type. …
Convert char to int in C and C++ - Stack Overflow
2011年2月17日 · char ch = (int)53; ch = ch - (int)48; which is then going through the C language integer promotions. ch = (int)ch - (int)48; and then truncated to a char to fit the result type. ch = …
What do 48 and 87 values refer to when converting hexadecimal …
2020年5月20日 · This code makes the assumption that the character encoding is ASCII. The relevant numbers are: 48: the ASCII code for '0' 65: the ASCII code for 'A' 97: the ASCII code …
x86 - Assembly two digit number subtraction - Stack Overflow
2013年9月7日 · I have a project for varsity where I need to add or subtract two 2-digit numbers (the user inputs the numbers). I got the addition to work. The subtraction gives the tens digit …