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Top Forums Programming Number of days in month from certain parameters, c programming request. Post 302449226 by fpmurphy on Sunday 29th of August 2010 01:04:50 PM
Old 08-29-2010
Here is a solution which works for the ksh93 shell
Code:
#!/bin/ksh93

year=2010
month=8
dow=4
wom=3

mstr=(jan feb mar apr may jun jul aug sep oct nov dec)
dstr=(sun mon tue wed thu fri sat)
wstr=(1st 2nd 3rd 4th 5th)

dom=$(printf "%(%d)T\n" "${wstr[$wom]} ${dstr[$dow]} ${mstr[$month - 1]} ${year}")

printf "Day of month is: $dom\n"

 

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CAL(1)							    BSD General Commands Manual 						    CAL(1)

NAME
cal -- displays a calendar SYNOPSIS
cal [-smjy13] [[month] year] DESCRIPTION
Cal displays a simple calendar. If arguments are not specified, the current month is displayed. The options are as follows: -1 Display single month output. (This is the default.) -3 Display prev/current/next month output. -s Display Sunday as the first day of the week. (This is the default.) -m Display Monday as the first day of the week. -j Display Julian dates (days one-based, numbered from January 1). -y Display a calendar for the current year. A single parameter specifies the year (1 - 9999) to be displayed; note the year must be fully specified: ``cal 89'' will not display a calen- dar for 1989. Two parameters denote the month (1 - 12) and year. If no parameters are specified, the current month's calendar is displayed. A year starts on Jan 1. The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd of September. By this time, most countries had recognized the ref- ormation (although a few did not recognize it until the early 1900's.) Ten days following that date were eliminated by the reformation, so the calendar for that month is a bit unusual. HISTORY
A cal command appeared in Version 6 AT&T UNIX. OTHER VERSIONS
Several much more elaborate versions of this program exist, with support for colors, holidays, birthdays, reminders and appointments, etc. For example, try the cal from http://home.sprynet.com/~cbagwell/projects.html or GNU gcal. BSD
June 6, 1993 BSD
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