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Q: How to use FUNCTION CURRENT-DATE?

Answer:
FUNCTION CURRENT-DATE returns 21-char timestamp. Format: YYYYMMDDHHMMSSDHHMM (D=hundredths, HH=GMT offset). MOVE FUNCTION CURRENT-DATE TO WS-TIMESTAMP. Parse components with reference modification or REDEFINES.
current-date function timestamp
COBOL
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Q: How to use intrinsic functions?

Answer:
COBOL-85 intrinsic functions: FUNCTION LENGTH(field), FUNCTION CURRENT-DATE, FUNCTION UPPER-CASE(field), FUNCTION NUMVAL(field), FUNCTION MOD(a,b), FUNCTION INTEGER-OF-DATE(date). Use in expressions or with COMPUTE. Return values only, no side effects.
functions intrinsic built-in