Thread: Testing for ASCII values?

  1. 02-19-2002 #1
    csmatheng
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    Testing for ASCII values?

    I am looking for a function that would ONLY allow the user to enter integers (0-9) ascii values 48-57. I have looked everywhere I know and even asked some other friends of mine but no one has any idea. If someone can offer any kind of help, I would greatly appreciate it. I have not started on the function because I do not know where to start.
  2. 02-19-2002 #2
    Salem
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    isdigit - in ctype.h

    This is for reading single characters '0' to '9', not whole numbers like 12345
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