By Roger Hutty
COBOL, the typical enterprise oriented Language, is the oldest programming language nonetheless in use. This e-book covers just about all of the amenities laid out in the ANSI COBOL 1985 typical, together with the Nucleus, Sequential I-O, Relative I-O, listed I-O, all on the optimum point (Level 2).
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Extra info for COBOL 85 Programming
Will cause the contents of the data item TOP-SCORE to be set to 100. 5 which uses a slight variation on one of the ADD statement variations that we have already examined. However, a MOVE statement is required. After inputting two numbers, say 40 and 23, the data items will contain the following N0-1 PIC 99 GDJTI N0-2 PIC 99 C[[D N0-3 PIC 999 ~ Until a number is input or moved to a data item, its contents cannot be predicted. To make sure that N0-3 contains zero before having something added to it, the MOVE statement is executed so that the data items will now contain the following N0-1 PIC 99 GDJTI N0-2 PIC 99 C[[D N0-3 PIC 999 ~ 30 COBOL 85 Programming IDENTIFICATION DIVISION.
15131 Notice that the sign is not in a box. This is because the S picture does not normally occupy a character position. e. three characters long. The sign, if there is one, is usually embedded in the first character. 15131 38 COBOL 85 Programming which shows a signed numeric data item with a decimal point. As neither the S nor V picture occupies a character position the item is 3 characters long. 6 The + and - PICTUREs An edited numeric data item may be signed by prefixing the picture with a - picture or a + picture.
The ADD-TEN program, being a simple program, has only one paragraph. A paragraph must be given a name. The name chosen for the one paragraph in the ADD-TEN program is ADD-10. A paragaph consists of a sequence of statements. During execution of the program each statement is executed one after the other in the order in which they occur. For example, the four statements in the ADD-10 paragraph will be executed in the order: the ACCEPT statement, followed by the ADD statement, followed by the DISPLAY statement, followed by the STOP statement.