例題
[C3535.cob] 000001 @OPTIONS RCS(UTF16) 000002 IDENTIFICATION DIVISION. 000003 PROGRAM-ID. C3535. 000004 ENVIRONMENT DIVISION. 000005 CONFIGURATION SECTION. 000006 DATA DIVISION. 000007 WORKING-STORAGE SECTION. 000008 01 DATA-1 PIC 9(10). 000009 01 DATA-2 PIC N(10). 000010 PROCEDURE DIVISION. 000011 MOVE FUNCTION NATIONAL-OF ( DATA-1 ) TO DATA-2. 000012 EXIT PROGRAM. 000013 END PROGRAM C3535.
C3535.cob 11 : JMN3535I-S FUNCTION NATIONAL-OFの引数-1は，字類が英字または英数字でなければなりません．
