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Is there a way to write a large number in C++ source code with spaces to make it more readable? [duplicate]
(6 answers)
Delimiter tens and units in c++ literals [duplicate]
(2 answers)
Closed 3 years ago.
Many languages allow you to insert underscores into long hex numbers to improve readability. I would like to put underscores into hex numbers that define forty bit hardware addresses. For example I would like to write 0x0400000000 as 0x04_0000_0000.
It is tough for me to count consecutive zeros but I can handle groups of four.
Does C or C++ allow punctuation inside hex constants?
Is there a practical workaround if something like this is not allowed in the language?
Thanks,
Related
This question already has answers here:
Integer literal with single quotes? [duplicate]
(2 answers)
Is there a way to write a large number in C++ source code with spaces to make it more readable? [duplicate]
(6 answers)
Closed 2 years ago.
I recently came across the following C++ code snippet:
int Mod = 998'244'353;
I was intrigued by the use of single quotes in this number.
Could someone elaborate on what this gets interpreted as and why is it accepted?
Also has this formatting always been there in c++?
This question already has answers here:
Big numbers library in c++ [closed]
(4 answers)
Store and work with Big numbers in C
(3 answers)
Closed 2 years ago.
I'm new to c++ so I don't know if there are any specific libraries that could do this. Any help would be appreciated!
This question already has answers here:
How can I set the decimal separator to be a comma?
(2 answers)
Closed 2 years ago.
So I am at the start of my programming career and I wrote a code for a simple vending machine on C++.
The problem is, when people pay, they need to input their change into the console like: " 0.50€" for 50 cents. The problem is I live in Europe, and most of the people put in commas as floating numbers like "0,50€". The program collapses when this happens. How do I solve this elegantly? With either the program discovering it and mentions their failure so they can type it in correctly or, better, accepts it as a normal floating-point number.
It is a matter of locale settings.
This question may help you in setting the locale you need in your program.
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Unicode Processing in C++
(9 answers)
Closed 5 years ago.
I have to write a C++ program to specify a character from input if it is a number or word or symbol? Firstly I used ASCII to solve that, but the problem is when the input is not a character in ASCII, example it is in UTF-16, it is a Korean word...
So what can I do to solve?
Thank you!
wchar_t should be the one you are looking for.
In C++, wchar_t is a distinct fundamental type (and thus it is not defined in nor any other header).
This question already has answers here:
Using Regex to generate Strings rather than match them
(12 answers)
Reverse regular expression, create string from regex
(1 answer)
Closed 9 years ago.
Or "How can I RegEx in reverse?"
specifically I want to take a regex such as wks[0-9][0-9][0-9]
and create a list such as wks001,wks002,wks003, etc
I know the easiest way in this example would be to simply increment the number through addition, but say I want it to be even more sophisticated later on such as [0-9abc] I'd like to use a more sophisticated tool.
preferable would be some windows capable scripting tech, such as vbscript/powershell but I'm open to other alternatives. I guess I kind of thought this might be something that is done all the time by random number generators and such and would be a programming staple, but I lack the understanding to phrase it correctly I think.