how to convert string to float type?

how to convert string to float type?

[Hackker Wong]

hi,

i am doing a calculator homework. i use get() in text_io to read the
whole expression including (+, -, *, /, numbers) in string format. but i
have a problem in converting sub-string to float type. would anyone help
me?

thx!

--
- By Hackker
****************************************************
  Mr. Hackker Wong,
  Y99 Student of Computer Science,
  The Chinese University of Hong Kong.
****************************************************
 -The World can't run without computer technicians-

Re: how to convert string to float type?

[John English]

Hackker Wong wrote:
> i am doing a calculator homework. i use get() in text_io to read the
> whole expression including (+, -, *, /, numbers) in string format. but i
> have a problem in converting sub-string to float type. would anyone help
> me?

Two possibilities suggest themselves:
1) use the 'Value attribute (RM95 Annex K, available online at
   http://burks.bton.ac.uk/burks/language/ada/lrm95/k.htm, paras
   264-267)
2) use some of the facilities defined in Ada.Float_Text_IO (see
   http://burks.bton.ac.uk/burks/language/ada/lrm95/a_10_09.htm).

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