| [Overview][Constants][Procedures and functions][Index] |
return the number of weeks in the year, given a date
Source position: dateutil.inc line 109
function WeeksInYear( |
const AValue: TDateTime |
):Word; |
AValue |
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Day in the year. |
Number of weeks.
WeeksInYear returns the number of weeks in the year part of AValue. The return value is either 52 or 53.
| Remark: | The first week of the year is determined according to the ISO 8601 standard: It is the first week that has at least 4 days in it, i.e. it includes a Thursday. |
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Return the number of weeks in a given year |
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Return the number of days in the year in which a date occurs. |
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Number of days in a particular year. |
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Return the number of days in the month in which a date occurs. |
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Number of days in a month of a certain year. |
Program Example12; { This program demonstrates the WeeksInYear function } Uses SysUtils,DateUtils; Var Y : Word; Begin For Y:=1992 to 2010 do Writeln(Y,' has ',WeeksInYear(EncodeDate(Y,2,1)),' weeks.'); End.