Pascal · Introductory

Lesson 1 · On the house

Program structure

Program headers, begin/end blocks, writeln, compiler modes, and building with Free Pascal.

Lesson 2

Variables and types

var and const sections, Integer, Real, Boolean, Char, string, operators, and formatted output.

Lesson 3

Decisions

if/then/else, compound statements, case with ranges and lists, and Boolean operators.

Lesson 4

Loops

for/to/downto, while/do, repeat/until, Break, and Continue.

Lesson 5

Procedures and functions

Declaring subprograms, Result, value vs var vs const vs out parameters, and Exit.

Lesson 6

Arrays

Static arrays with custom bounds, multidimensional arrays, Low/High/Length, and open array parameters.

Lesson 7

Strings

AnsiString, indexing from 1, Length, Copy, Pos, Insert, Delete, and SysUtils helpers.

Lesson 8

Records

Record types, with statements, record constants, nested records, and passing records.

Lesson 9

Enumerations and sets

Enumerated types, Ord, Succ, Pred, Low/High, set types, and in, +, *, -.

Lesson 10

Text files

TextFile, AssignFile, Rewrite, Append, Reset, Readln, EOF, and IOResult.