nanaman

Quick question, I have a program that needs to check if a character read into it is part of the alphabet. Now I know I could do this using a list of the alphabet and using a function to check that list a return a boolean value (but this method is ugly and slow). So I thought I could make a subtype i.e. subtype valid_letter is Character Range 'a'..'z';

I was wondering if anyone knew a way to check this in an if statement

i.e. if X = 'a' then,

but replacing the 'a' with "is part of type valid_letter".

Thanks in advance.

jamiemac2005

Hey sorry but i dont know the language you're using...

But....Could it be compared with an integer (which represents the letter) e.g. if X = 1 (representing 'a') or could you use an integer and convert it into a character for the check...

e.g. if X = Char(1); sorry this wont be in any way accurate, but data conversion between ordinal types (integer and character) should be easy?

if theres a char function then you could use a for loop then use the char function to check each digit (though it would probably be ascii so 1 would not be a etc)...

Hope any of this helps,
Jamey