FREE PASCAL MAX FILE NAMES CODE

Please note that, if you use a file parameter with subprograms, it must be declared as a var parameter. Next, it opens the file, reads the data and computes the average rainfall. The program creates a file named rainfall.txt, and stores some rainfall data. The following example illustrates this concept. Pascal allows file variables to be used as parameters in standard and user defined subprograms.

FREE PASCAL MAX FILE NAMES CODE

When the above code is compiled and executed, it produces following result: Name: John Smith Readln // to see the output closeFile (f ) end. s_addr ) writeln ( 'Batch Code: ' ,Student. Now let us write a program that would read the student's data from the file: program DataFiles typeДЇ : file begin AssignFile (f, 'students.dat' ) reset (f ) while not eof (f ) do begin Blockread (f ,Student, sizeof (StudentRecord ) ) writeln ( 'Name: ' ,Student. We have just created and written into a file named students.dat. You can open the file using a text editor, like notepad, to look at John Smith's data.

When compiled and run, the program would create a file named students.dat into the working directory. s_batchcode : = 'Computer Science' BlockWrite (f ,Student, sizeof (StudentRecord ) ) CloseFile (f ) end. It would create a file named students.dat and write a student's data into it: program DataFiles typeДЇ : file begin AssignFile (f, 'students.dat' ) Rewrite (f ) Let us write a program that would create a data file for students' records.

Variables of a file type are created using the var declaration: varДЇollowing are some examples of defining some file types and file variables: typeДЄrrfile = file of array of integer var The base type could be anything like, integer, real, Boolean, enumerated, subrange, record, arrays and sets except another file type. Where, the base-type indicates the type of the components of the file.

A file's type is determined by the type of the components. Pascal treats a file as a sequence of components which must be of uniform type.

Free pascal max file names