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Number conversion

Posted on 1997-10-21
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Last Modified: 2010-04-16
Please provide the algorithm for converting a three-digit number in words into numeric output. Ex.:
Input: two hundred thirty-five
Output: 235

P.S. I'm using Turbo Pascal 7.0
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Question by:chadd082197
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Expert Comment

by:kellyjj
ID: 1216329
You want source code for something like this? For only 50 points?  Better increase the points.  Is this some kind of hw assignment for school
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cymbolic earned 50 total points
ID: 1216330
Chadd, let me just give you a general approach to the solution.

1) you need a token parser to examine your string input line, separating out individual number names and Significance names (Like hundred)

You need a table of string names, with their equivalent number strings e.g. (FIVE:5) and (HUNDRED:). Some tokens you need to just eliminate.

Then, you can loop through the input string, on each pass select the next token (substring/word) off the input string,
find this in your table, and add the number string (if any) to you resultant output string.

When out of tokens, either display output string at this point, or
process it further, counting back by threes, and inserting commas, then dispay.

Try it, it's not so hard!

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Author Comment

by:chadd082197
ID: 1216331
Thanks for replying.... I'm increasing the points because I need a bit more explaining done, maybe some pseudocode (if not the actual code). We haven't really gotten into arrays yet, so if there's a simple way of doing this with control loops (return, for, while, case, etc) and strings, that's what I need. Thanks!


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