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Titlebook: COBOL; An Introduction Tony Royce Textbook 1991Latest edition A. P. Royce 1991 design.development.language.programming.testing

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Narrow Plasmon Resonances in Hybrid SystemsA COBOL program would often be written down on a coding sheet (see attached example); it is necessary when doing this — and later when keying the program in to the machine — to follow certain rules:
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Daniel Denninger,Maik Berger,Yordan KyosevEach item of data that your program is going to use must be described and named — thus setting aside data storage space in Central Memory; this is done in one of the sections of the Data Division (e.g. the Working-Storage Section).
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Andreas Kretschmer,Christoph MüllerIt is possible to break up an item of data into parts and refer either to the whole item or to the individual parts — e.g. EMPLOYEE-DETAILS could consist of: EMPLOYEE-NAME, EMPLOYEE-ADDRESS and EMPLOYEE-WAGE.
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Quasiparticles in Narrow Band SystemsAnother method of doing arithmetic in COBOL is to use the commands: ADD, SUBTRACT, DIVIDE and MULTIPLY.
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https://doi.org/10.1007/978-1-4684-5559-5If a numeric data-item can be negative — it must be described in the DATA DIVISION as . — otherwise the computer will assume it is always positive.
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