Senin, 17 Mei 2010

Verb dan specifier pada fortran

Verb dan specifier pada fortran

Verb  adalah  kata  kerja perintah yang terdapat dalam statement. Hampir semua statement Fortran mempunyai verb, kecuali assignment statement. Contoh WRITE, CALL

Unit Specifier dapat berupa :
1.    * atau 0 menunjukkan unit alat untuk Keyboard atau layar.
2.    Ungkapan Integer, yaitu nilai integer selain nilai 0 menunjukkan unit alat yang dipergunakan adalah file eksternal (printer atau file disk).  Statement OPEN menunjukkan nama dari filenya. Nama file sebagai berikut :
        - LPT1: atau PRN (printer yang pertama).
        - CON: menunjukkan alat Console.
        - LPT2: (Printer kedua).
        - COM: atau COM1: atau COM2 untuk Port Komunikasi.
        - Nama file di Disk.
          contoh : OPEN(1,File='LPT1:')

Format Specifier :
     Digunakan untuk menunjukkan format yang akan dipergunakan oleh data input ataupun output.
Statement :
1.    Statement yang terolah (Executable Statement) yaitu : statement yang menyebabkan suatu operasi dilakukan. Contoh : ASSIGN, CALL, CONTINUE, DO, ELSE, ELSEIF, AND, ENDIF, GOTO, IF, PAUSE, RETURN, STOP, BACKSPACE, CLOSE, ENDFILE, OPEN, READ, REWIND dan WRITE.
2.    Statement tak terolah (Non-Executable Statement) yaitu : statement yang tidak melakukan operasi. Contoh : FORMAT, DATA, PARAMETER, COMMON, DIMENSION, QUIVALENCE, EXTERNAL, IMPLICIT, INTRINSIC, SAVE dan TYPE , PROGRAM, FUNCTION SUBROUTINE.

sumber : *

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