Just wanted to know... is there any variable in C++ that can hold larger numbers than unsigned long long int , or is it the largest variable?
Thanks in advance :P
unbeatable0
32
Junior Poster in Training
Recommended Answers
Jump to PostIf you can't fit the value into a long int or a long double (or long long, if your compiler supports), you need some kind of arbitrary length arithmetic type, which isn't native to C++.
Jump to PostTell us what compiler/ide you are using?
But the following link would be the obvious choice.
Jump to PostIf you want to switch to Java it supports the Big Int class... but there is nothing bigger that I know of in C++.
All 10 Replies
Narue
5,707
Bad Cop
Team Colleague
If you can't fit the value into a long int or a long double (or long long, if your compiler supports), you need some kind of arbitrary length arithmetic type, which isn't native to C++.
unbeatable0
32
Junior Poster in Training
I see... so, are there some classes that people made for huge numbers handling?
I like working with big numbers :P
iamthwee
Tell us what compiler/ide you are using?
But the following link would be the obvious choice.
dmanw100
36
Posting Whiz in Training
If you want to switch to Java it supports the Big Int class... but there is nothing bigger that I know of in C++.
unbeatable0
32
Junior Poster in Training
Tell us what compiler/ide you are using?
But the following link would be the obvious choice.
What's IDE?
I'm using Dev-C++ (version 4.9.9.2 if it helps...)
Narue
5,707
Bad Cop
Team Colleague
>so, are there some classes that people made for huge numbers handling?
Yes. I would recommend GMP as well.
>I like working with big numbers
It should go without saying that using such a library is extremely likely to be slower than built in types. If you don't need big numbers, don't bother. I say this because I've caught people using BigInt when the value never exceeded int and there was no foreseeable increase in the necessary range.
TheBeast32
54
Posting Whiz in Training
The Dev-Pak for GMP is on this thread. I attached it to one of my posts: http://www.daniweb.com/forums/thread145324.html
ArkM
1,090
Postaholic
Just imagine that all your numbers are scaled. For example, let 1 is equal to 1 billion, 2 == 2 billions and so on (append nine zeroes when printing)...
What's a pleasure to summarize very BIG numbers with short int arithmetics: no need in GMP and other stuff...
;)
dmanw100
36
Posting Whiz in Training
Unless you absolutely need to know those 9 digits that are missing... but that rarely ever happens :)
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