Structured COBOL Programming. 10th edition. John Wiley & Sons, Inc . Nancy Stern Hofstra University Robert A. Stern Nassau Community College James P. Ley University of Wisconsin-Stout. PowerPoint Winifred J. Rex Presentation Bowling Green State University.
John Wiley & Sons, Inc.
Robert A. Stern
Nassau Community College
James P. Ley
University of Wisconsin-Stout
PowerPoint Winifred J. Rex
Presentation Bowling Green State University
Please note that the original slides will be modified in a number
of places by your professor.
These changes are for pedagogical reasons.
To familiarize you with
Symbolic language (like COBOL)
Record layout forms describe format of input and output data
Printer spacing charts describe
Program planning tools used to map out structure and logic of program
Once specifications are captured (discuss!), design takes place.
Two real kinds of design:
Compiler is program that
Source program in symbolic language
Translated by compiler
Object program in machine language
Likely to remain important language
Many calculations with dates incorrect starting in 2000
Subtract 70 from 95 (95 - 70 = 25)
00 - 70 = -70 when age should be 30
To correct problem
1995 - 1970 = 25
2000 - 1970 = 30
Two techniques used to develop programs that are easier to understand, test, debug and modify
Program divided into paragraphs
For COBOL program