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There are also characters that represent numbers without a digit system, like the Roman numerals, and fractional numbers, like 1/4 or 3/4.
The following type represents the numeric value of a Unicode character.
This is a structure type with the following fields:
int numerator; int denominator;
An integer n is represented by numerator = n
,
denominator = 1
.
The following function converts a number character to its numerical value.
Returns the numeric value of a Unicode character.
The return value is a fraction, or the pseudo-fraction { 0, 0 }
for
characters that do not represent a number.