abap program for Date, Month and Popup Related Function Modules

Date/Month Related Function Modules:

DATE_COMPUTE_DAY – Finds day of the month
DATE_CONV_EXT_TO_INT - user formatted date is converted to system date
DATE_GET_WEEK - convert date into year + week format
DATE_TO_DAY – gives weekday from date
DATE_IN_FUTURE – takes number of days and date - gives future date in user format and system format
MONTH_PLUS_DETERMINE – add or subtract month from a date
RP_CALC_DATE_IN_INTERNAL – add/subtract year/month/days from a date
WEEK_GET_FIRST_DAY – take input as YYYYWW and it gives first day of the week.
MONTH_NAMES_GET – language is only parameter. Returns internal table with months.
MONTH_PLUS_DETERMINE – subtract months from date

Popup Related Function Modules:

POPUP_TO_DISPLAY_TEXT – display 2 line text.
POPUP_TO_CONFIRM_STEP
POPUP_TO_CONFIRM_WITH_VALUE (with Back and Exit)
POPUP_TO_CONFIRM_LOSS_OF_DATA (with Cancel).
POPUP_TO_CONFIRM_WITH_MESSAGE
POPUP_TO_DECIDE
POPUP_TO_DECIDE_WITH_MESSAGE