You are right! I hope to input a number, for example 123, and output its text "one hundred and twenty-three".

So, for 1.23456789012345678901, I want the result is "one point two three four five six ...(something omitted)".

I can define a funciton, say "toText", to preform this action.

In ghci, I can use like this.

Prelude>toText 123.45

"one hundred and twenty-three point four five"

However, in this function, I have to read this number as String(originally a number, now "123"), and make it to words(String) like "one two three".

But for a float number, it will not work very well.

Prelude>toText 1.23456789012345678901

"(a truncated answer)"

This confuses me!

On Wed, Sep 18, 2013 at 10:23 PM, Oscar Benjamin <oscar.j.benjamin@gmail.com> wrote:

On Sep 18, 2013 2:15 PM, "yi lu" <zhiwudazhanjiangshi@gmail.com> wrote:
>
> In fact, I am not looking for some way to convert a float 0.75 to 3%4. Your reply is helpful!
> What I need is just as much number of digits as possible. If I can hold as many digits of pi, i.e. 3.1415926535... as possible and save it in a String, it will be perfect!

I think something is still missing from your description.

If you want to store the digits of pi in a string then why not use a string?

Oscar

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