My Math Forum Reverse of a floating or decimal point number

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 November 1st, 2018, 08:22 PM #1 Banned Camp   Joined: Oct 2018 From: Mumbai Posts: 18 Thanks: 0 Reverse of a floating or decimal point number Reference : https://www.programmingsimplified.co...reverse-number Is it possible to write a computer program which will reverse a decimal or floating point number? Example : 341.54 Output : 45.143 Do we have to just change the data type to float or double instead of int in the above C program reference or the programming logic has to be also modified? Thanks & Regards, Prashant S Akerkar Last edited by akerkarprashant; November 1st, 2018 at 08:27 PM.
 November 1st, 2018, 10:29 PM #2 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,826 Thanks: 646 Math Focus: Yet to find out. Yes you could easily store each digit of a number in a vector and then just flip it and put the digits back together.
 November 1st, 2018, 11:41 PM #3 Banned Camp   Joined: Oct 2018 From: Mumbai Posts: 18 Thanks: 0 Thank you. Can you please send me the computer program in C , C++ , Java , C# & Python programming languages ? I will compile with the respective compilers and run the program in the respective SDK. Once again , thank you. Thanks & Regards, Prashant S Akerkar Last edited by akerkarprashant; November 1st, 2018 at 11:43 PM. Reason: Content.
November 2nd, 2018, 03:44 AM   #4
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Quote:
 Originally Posted by akerkarprashant I will compile with the respective compilers and run the program in the respective SDK.
That's big of you.

The art of programming is to pick the language to suit the application. There's no point in writing something so basic in so many languages unless you are doing it for practice.

Perl:
Code:
> perl -e 'print scalar(reverse shift), "\n";' 3.14
41.3

Last edited by v8archie; November 2nd, 2018 at 03:56 AM.

 November 2nd, 2018, 07:22 AM #5 Banned Camp   Joined: Oct 2018 From: Mumbai Posts: 18 Thanks: 0 Thanks. https://perlmaven.com/reverse As you mentioned in Perl code, the scalar function is called which could be the inbuilt function in the Perl math or string library. Can you give me the source code of the scalar function? This is required to know the algorithm or programming logic for giving us the reverse of a floating or decimal point number. As you see, https://www.programmingsimplified.co...reverse-number There is a source code for reverse of a Integer data type. Similarly, Can we have the source code of a reverse of a floating or decimal point number? Thanks, once again. Thanks & Regards, Prashant S Akerkar Last edited by akerkarprashant; November 2nd, 2018 at 07:33 AM. Reason: Content
 November 2nd, 2018, 08:24 AM #6 Global Moderator   Joined: Dec 2006 Posts: 20,753 Thanks: 2136 Reversing a floating point number isn't properly defined in the question. The example reverses a number given in decimal form, not floating point form.
November 2nd, 2018, 10:06 AM   #7
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Quote:
 Originally Posted by akerkarprashant Can you give me the source code of the scalar function? This is required to know the algorithm or programming logic for giving us the reverse of a floating or decimal point number.
No, I can't. But neither is it necessary. One needs only a rudimentary understanding of Perl and it's variables.

The scalar function forces the reverse function to treat the input as a string rather than as an element of an array.

 Tags algorithm, decimal, floating, number, point, reverse

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