Tip:Make w wide enough
to write the numeric values, the commas, and the optional decimal
point.
d
specifies the number
of digits to the right of the decimal point in the numeric value.
This argument is optional.
Range:0–31
Requirement:must be less than w
Details
The COMMAw.d format
writes numeric values with a comma that separates every three digits
and a period that separates the decimal fraction.
Comparisons
The COMMAw.d format is similar to the
COMMAXw.d format, but the COMMAXw.d format reverses the roles
of the decimal point and the comma. This convention is common in European
countries.
The COMMAw.d format is similar to the
DOLLARw.d format except that the COMMAw.d format
does not print a leading dollar sign.