Structured COBOL Programming
Use the fields or literals following each BY to increment each field you vary . These values may be positive or negative . PERFORM paragraph - name - 1 [ { THRU THROUGH THRU } paragraph - name - 2 ] [ WITH TESTS BEFORE AFTER VARYING S ...
There is , however , a new entry in specifying the attributes of the fields : the Sign clause . The character S is used in the Picture clause to indicate the presence of an operational sign . It must be the leftmost character of the ...
For numeric fields specified as unsigned ( no S in the PICTURE clause ) the COBOL compiler ensures that a sign is present so that the values are treated as absolute . VALUE CLAUSE The VALUE clause may be used to specify the initial ...
File Techniques for Data Base Organization in COBOL
Instructor's Manual to Accompany Structured COBOL Programming
... w ident if iter-4 sawdus |##: 1817 lol (lit.jl: } - - - lso - {{o} !ool initial o LEADING {:}; - #} - liter: 1-2 - - - - - - - identificr-2 FoR REPLACING - o J Bl:FinkE U is to(* BY {{...!!!, {# } is orial. iii...i. - - - Al.l.
由美国SYBEX公司授权出版