Format real number as a string without trailing zeros

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Posted on by cjohnson300

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How can I best convert a real number such as 16.00000000000000 into a string "16"?

I can use num2str but that doesnt remove the zeros. And I can loop through the string and remove the zeros and then remove the decimal point as well, but wondered if there was a more elegant solution?

Thanks in advance

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cjohnson300 203 on at

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RE: Format real number as a string without trailing zeros

perfect - thank you!

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Martin Dráb 236,013 Most Valuable Professional on at

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RE: Format real number as a string without trailing zeros

Oh, sorry, now I see I didn't give you the right answer.

I would do this:

str s = System.String::Format("{0:G29}", number);

It returns 15 and 16.125 in your two cases (I've tested it in D365FO).

By the way, -1 in num2str() means using defaults.

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cjohnson300 203 on at

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RE: Format real number as a string without trailing zeros

What do the -1s indicate?! It's not in the Microsoft TechNet definition! And I just tried it and it returned 15.00 for 15.000000000000000

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Martin Dráb 236,013 Most Valuable Professional on at

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RE: Format real number as a string without trailing zeros

In that case, num2str() is exactly what you need For example: num2Str(16.1250000000000000, -1, -1, -1, -1).

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cjohnson300 203 on at

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RE: Format real number as a string without trailing zeros

Thanks Martin

And if the "real" was 16.1250000000000000, would your solutions still hold? I would like to see 16.125

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Martin Dráb 236,013 Most Valuable Professional on at

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RE: Format real number as a string without trailing zeros

Setting the third argument of num2str() should do the trick.

You could also convert the real number to int and use int2str().

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