Compiler Construction Using Java, JavaCC, and Yacc by Dos Reis Anthony J

Author:Dos Reis, Anthony J.
Language: eng
Format: epub
ISBN: 9781118112779
Publisher: John Wiley & Sons
Published: 2012-02-22T16:00:00+00:00

We included the newline character (‘/n’) at the end of the prompt message to force the user input to start on the next line. Thus, when this sequence is executed, the display would look like this (assuming we enter 23):

Enter integer

23

If, however, we define the prompt message with

^@L0: dw “Enter integer:”

then the display would look like this:

Enter integer: 23

Either approach works well.

11.14 ENTRY DIRECTIVE

In all the assembly language programs we have examined so far, execution starts at the physical beginning of the corresponding machine code. For example, the execution of the machine code corresponding to the following assembly program starts with the initial p instruction.

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