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The C Users' Group Library 1994 August
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v_02_01
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2n01046a
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1990-11-14
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211b
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15 lines
{*
* return true if c is a digit; otherwise return false.
*}
function isdigit(c : char) : boolean;
begin
if ('0' <= c) and (c <= '9') then
isdigit := true
else
isdigit := false;
end;