By Roger Hutty
COBOL, the typical company oriented Language, is the oldest programming language nonetheless in use. This publication covers just about all of the amenities laid out in the ANSI COBOL 1985 common, together with the Nucleus, Sequential I-O, Relative I-O, listed I-O, all on the maximum point (Level 2).
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Additional info for COBOL 85 Programming
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.
It is common practice to indent continued lines by four character positions so that it is more obvious that all the lines belong to the one statement. The ROUNDED and SIZE ERROR phrases may be used together if required. For example, the result from the statement SUBTRACT FIRST FROM SECOND GIVING THIRD ROUNDED ON SIZE ERROR PERFORM SUB-ERROR. will first be rounded and then the paragraph SUB-ERROR will be performed if a SIZE ERROR has occurred. 4 into your computer. Compile and execute the program, entering appropriate numbers and checking the results.
ACCEPT NUM-IN. DISPLAY "The number " WITH NO ADVANCING. DISPLAY NUM-IN " was input". would produce the following dialogue, Enter number 256 The number 256 was input the display cursor being left on the same line when a WITH NO ADVANCING phrase is used. The DISPLAY statement can be used to output to any hardware device using the UPON phrase. The necessary code to output to a printer, for example, would be ENVIRONMENT DIVISION. CONFIGURATION SECTION. SPECIAL-NAMES. SYSLIST IS PRINTER. DISPLAY "This and that" UPON PRINTER.