By R. Hutty (auth.)

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The contents of LOST will remain unchanged. Several numeric data-items and/or literals together may be subtracted from one other numeric data-item in one SUBTRACT statement. For example, the SUBTRACT statement in the following: 77 NUM-1 PIC 999. 77NUM-2PICS99V99. 2161 33 77 NUM-3 PIC S999V99. 5 NUM-2 FROM NUM-3. 5 and NUM-2 to be subtracted from NUM-3. 26). Another form of the SUBTRACT statement allows the result of the subtraction to be placed in a numeric data-item which is not included in the items to be subtracted.

Ii) The . statement terminator is placed at the very end of the whole IF statement. 2 CONDITIONS The general form of the IF statement is IF condition statement(s) ELSE statement(s). where the condition is defined as . {date-name} { date-name} literal relat10nal operation literal There are several relational operators available, the most common being = (equal to) >(greater than) < Oess than) The symbols may also be expressed as words as follows EQUAL TO GREATER THAN LESS THAN These word forms were the only ones available in earlier COBOL when the 51 =,>and< symbols were not generally accepted.

FROM {da~a-name} hteral GIVING data-name specifying that the sum of any combination of literals and/or numeric data-items may be subtracted from either a numeric data-item or a literal and the result placed in another data-item. So, for example, the SUBTRACT statement in the following: 77 NUM-1 PIC 99. lm 77 NUM-2 PIC S999V99. 99. SUBTRACT NUM-1 FROM NUM-2 GIVING NUM-3. 27. Note that, although the subtraction is made from NUM-2, it remains unchanged- only NUM-3 is changed. 3) shows the use of the SUBTRACT statement to deduct the discount from a charge to give the discounted charge.

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