March 2007
Beginner
526 pages
13h 53m
English
book
Introduction to the New Mainframe: z/VSE Basics
by Wolfgang Bosch, Hans Joachim Ebert, Helmut Hellner, G. M. (Jerry) Johnston, Wilhelm Mild, Ingolf Salm, Joerg Schmidbauer, Martin Walbruehl, Mike Ebbers
Content preview from Introduction to the New Mainframe: z/VSE Basics
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238 Introduction to the New Mainframe: z/VSE Basics
9.9.1 Advantages of compiled languages
Assembler, COBOL, PL/I, and C are all translated by running the source code
through a compiler. This results in very efficient code that can be executed any
number of times. The overhead for the translation is incurred just once, when the
source is compiled. Thereafter, it need only be loaded and executed.
Interpreted languages, in contrast, must be parsed, interpreted, and executed
each time the program is run, thereby greatly adding to the cost of running the
program. For this reason, interpreted programs are usually less efficient than
compiled programs.
Some programming languages, such as REXX, can be either interpreted or
compiled.
9.9.2 Advantages ...
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