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Preface
6
Contents
7
1. Elementary PL/I
13
1.1 The programming environment
13
1.2 Data attributes
15
1.3 Loops
27
1.4 Input and output
30
1.5 Distinction of cases
34
2. Extending the basics
41
2.1 Input and output of a character stream
41
2.2 The general loop
50
2.3 Arrays
55
2.4 Structures
62
2.5 Manipulation of character strings
69
2.6 Arithmetic
79
2.7 Manipulation of bit strings
104
2.8 Abstract data types
110
2.9 Time calculations
115
3. Block and program structure
120
3.1 Scope and lifetime of variables
120
3.2 Structure of a PL/I program
124
3.3 Exceptional conditions
147
4. Dynamic storage management
167
4.1 The CONTROLLED attribute
167
4.2 The BASED attribute
173
4.3 The AREA attribute
186
4.4 Dynamics with structure types
193
5. Use of files
198
5.1 PL/I files
198
5.2 Input and output of records
203
5.3 Special possibilities of input and output
216
6. Special PL/I techniques
223
6.1 Array expressions
223
6.2 Definition of variables
227
6.3 Parallel processing
232
6.4 Program generation at compile time
240
7. Interfaces to the world
250
7.1 Low- level programming
250
7.2 Manipulation of Wide Characters
260
7.3 Using REXX Components
263
7.4 Utilizing Java components
267
7.5 CGI and XML
274
Appendix A: Solution ideas
286
Appendix B: Built-in functions/subroutines
290
Arithmetic
290
Array-handling
290
Buffer- management
290
Condition- handling
291
Date/time
291
Floating- point inquiry (constants)
292
Mathematical
294
Miscellaneous
294
Ordinal- handling
295
Precision-handling
295
Pseudovariables
296
Storage control
296
String- handling
297
Subroutines
298
Type functions
299
Preprocessor
299
Index
301
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