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PrologOpenappend

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(Prolog) openappend

A common File I/O command to open a file to write to. If the file does not exist, it is created. If the file already exists, the data is kept intact and new data is added to it. If you want to clear the file first, use openwrite.

% Visual Prolog 5.2
DOMAINS
  FILE = myFile
GOAL
  openappend(myFile,"d:\PrologTest.txt"),
  writedevice(myFile),
  write("My first Prolog file output!\n"),
  writedevice(myFile),
  closefile(myFile).

Code links

• closefile
• DOMAINS
•  ?FILE
• GOAL
• write
• writedevice

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