Master programming syntax, solve interactive challenges & run live code in Syntaxis Explore Arena →
menu_book Course Curriculum (Pascal) expand_more
Program Basics
program header uses clause const declarations type declarations var declarations begin end write and writeln readln comments compiler directives
Types
integer types real types boolean char string enumerated types subranges sets records variant records
Control Flow
if then else case statement for to loop for downto loop while loop repeat until break continue exit with statement
Procedures and Functions
procedure declaration function declaration value parameters var parameters const parameters default parameters forward declarations nested routines recursion function result
Arrays and Pointers
static arrays dynamic arrays open arrays multidimensional arrays array bounds pointers new and dispose nil pointers typed files pointer records
OOP
classes constructors destructors visibility inheritance virtual methods override abstract methods interfaces properties
Units and Generics
unit interface unit implementation initialization section finalization section namespaces generic procedures generic classes specialize keyword operator overloading class helpers
Files and Errors
text files AssignFile Reset and Rewrite BlockRead pattern IOResult exceptions try except try finally raise assert
Pascal / Arrays and Pointers

typed files

Learn typed files in Pascal with a construct-specific explanation, unique example, engineering boundary, and mastery check.

10 min read • Intermediate

typed files is a focused Pascal topic inside Arrays and Pointers. This lesson explains the construct itself, the state or value it operates on, and the observable result it produces.

Read the example as a small executable experiment. Identify the exact syntax that belongs to typed files, then change one input and predict the result before running it.

Topic-specific example

pascal-05-09-typed-files.pas
pascal Try It Live 
var F:file of Integer; N:Integer; begin Assign(F,'nums.dat'); Rewrite(F); N:=7; Write(F,N); Close(F); end.
Edge case / engineering note

typed files has rules that are easy to miss when the example is copied mechanically. Check the feature-specific boundary shown by this construct: scope, mutability, evaluation order, type constraints, lifetime, error behavior, compile-time restrictions, or resource cleanup where applicable.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

typed files Mastery Check →
← PREVIOUS
nil pointers
NEXT →
pointer records