PASCAL in Tutorialspoint
variables
By default, _________ in Pascal are not initialized with zero.
>
Checks if the value of left operand is greater than the value of right operand, if yes, then condition becomes true. Example (A > B) is not true.
<>
Checks if the values of two operands are equal or not, if values are not equal, then condition becomes true. Example (A <> B) is true.
=
Checks if the values of two operands are equal or not, if yes, then condition becomes true. Example (A = B) is not true.
const
Constants can be declared in the declaration part of the program by specifying the _____ declaration.
/
Divides numerator by denominator. Example B / A will give 2
Pascal Statements
Each statement specifies a definite job of the program.
begin, end
Every block in Pascal is enclosed within a _____ statement and an ___ statement.
32, 64
Free Pascal compiler is a __- and __-bit Turbo Pascal and Delphi compatible Pascal compiler for Linux, Windows, OS/2, FreeBSD, Mac OS X, DOS and several other platforms.
Variable
It must begin with either a letter or an underscore.
Pascal
It was developed for teaching programming as a systematic discipline and to develop reliable and efficient programs.
%
Modulus Operator and remainder of after an integer division. Example B % A will give 0
*
Multiplies both operands. Example A * B will give 200
Facts about Pascal
Niklaus Wirth completed development of the original Pascal programming language in 1970.
assignment, relational
Only __________ operators and __________ operators are permitted on enumerated data type.
Character type constant
Operator = '+';
Pointer type constant
P = NIL;
Arithmetic, Relational, Boolean, Bit, Set, and String
Pascal allows the following types of operators −
not case-sensitive
Pascal is _______, so uppercase and lowercase letters mean same here.
Case Sensitivity
Pascal is a case non-sensitive language, which means you can write your variables, functions and procedure in either case.
Facts about Pascal
Pascal is based on the block structured style of the Algol programming language.
Pascal Statements
Pascal programs are made of statements.
begin, end, begin
Pascal variables are declared outside the code-body of the function which means they are not declared within the _____ and ___ pairs, but they are declared after the definition of the procedure/function and before the _____ keyword.
Facts about Pascal
Pascal was developed as a language suitable for teaching programming as a systematic discipline, whose implementations could be both reliable and efficient.
Facts about Pascal
Pascal was the primary high-level language used for development in the Apple Lisa, and in the early years of the Mac.
Subrange
Represents variables, whose values lie within a range.
Enumerated
Specifies a user-defined list.
Boolean
Specifies true or false logical values.
String
Stores an array of characters.
-
Subtracts second operand from the first. Example A - B will give -10
TRUE
TRUE or FALSE All constant declarations must be given before the variable declaration.
TRUE
TRUE or FALSE Each variable in Pascal has a specific type, which determines the size and layout of the variable's memory; the range of values that can be stored within that memory; and the set of operations that can be applied to the variable.
TRUE
TRUE or FALSE For global variables, Pascal variables are defined after the program header.
TRUE
TRUE or FALSE It is easy to understand and maintain the Pascal programs.
TRUE
TRUE or FALSE Special symbols and blanks must not be used in an identifier.
TRUE
TRUE or FALSE The end statement indicating the end of the main program is followed by a full stop (.) instead of semicolon (;).
TRUE
TRUE or FALSE The name of a variable can be composed of letters, digits, and the underscore character.
Facts about Pascal
The ISO 7185 Pascal Standard was originally published in 1983.
Facts about Pascal
The Pascal language was named for Blaise Pascal, French mathematician and pioneer in computer development.
variable name
The __ refers to the memory location where the value of the variable is going to be stored.
begin
The _____ statement of the main program block is where the program execution begins.
Pascal character set
The ________ consists of all upper case letters (A-Z), all lower case letters (a-z), all digits (0-9), and special symbols - + * / := , . ;. () [] = {} ` white space
scalar data types
The examples of _____ are integer, real, Boolean, character, subrange and enumerated.
end.
The last statement ____ ends your program.
comment
The lines within (*...*) will be ignored by the compiler and it has been put to add a _______ in the program.
Integer
The most natural size of integer for the machine.
readkey;
The statement ________ allows the display to pause until the user presses a key.
writeln();
The statement ________ uses the writeln function available in Pascal which causes the message to be displayed on the screen.
Boolean
This is also an integer type.
Pascal
This truly provides a great programming environment for learning programming as a systematic discipline based on the fundamental concepts.
Character
Typically a single octet (one byte). This is an integer type.
constants
Use of _________ makes a program more readable and helps to keep special quantities at one place in the beginning of the program.
Set type constant
Vowels = set of (A,E,I,O,U);
Embarcadero
_ is planning to build support for the Linux and Android operating system.
Turbo Pascal
__ provides an IDE and compiler for running Pascal programs on CP/M, CP/M-86, DOS, Windows and Macintosh.
Subrange Types
___ allow a variable to assume values that lie within a certain range.
Type declaration
____ indicates the category or class of the types such as integer, real, etc., whereas the variable specification indicates the type of values a variable may take.
Pascal
______ allows nested procedure definitions to any level of depth.
Pascal
______ allows numerical, logical, string and character constants.
Pascal
______ allows the programmers to define complex structured data types and build dynamic and recursive data structures, such as lists, trees and graphs.
Pascal
______ is Algol-based language and includes many constructs of Algol.
Pascal
______ is a general-purpose, high-level language that was originally developed by Niklaus Wirth in the early 1970s.
Pascal
______ is a procedural programming language, designed in 1968 and published in 1970 by Niklaus Wirth and named in honour of the French mathematician and philosopher Blaise Pascal.
Pascal
______ is a strongly typed language.
Pascal
______ offers a variety of programming structures.
Pascal
______ offers extensive error checking.
Pascal
______ offers features like records, enumerations, subranges, dynamically allocated variables with associated pointers and sets.
Pascal
______ offers several data types and programming structures.
Pascal
______ offers several data types like arrays, records, files and sets.
Delphi
______ provides compilers for running Object Pascal and generates native code for 32- and 64-bit Windows operating systems, as well as 32-bit Mac OS X and iOS.
Pascal
______ runs on a variety of platforms, such as Windows, Mac OS, and various versions of UNIX/Linux.
Pascal
______ supports object oriented programming.
Pascal
______ supports structured programming through functions and procedures.
Algol 60
_______ is a subset of Pascal.
Enumerated data types
_________ allow values to be specified in a list.
Variables
_________ are assigned a value with a colon and the equal sign, followed by a constant expression.
Structured data types
_________ are made of the scalar types; for example, arrays, records, files and sets.
Enumerated data types
_________ are user-defined data types.
Data types
_________ can be categorized as scalar, pointer and structured data types.
Variables
_________ can be initialized (assigned an initial value) in their declaration.
variables
_________ may contain rubbish values.
Data types
_________ of an entity indicates the meaning, constraints, possible values, operations, functions and mode of storage associated with it.
String type constant
president = 'Johnny Depp';
Ordinal(Integer)type constant
valid_age = 21;
e = 2.7182818;
velocity_light = 3.0E+10;
type
A ____ can be identified by a name or identifier.
constant
A ________ is an entity that remains unchanged during program execution.
variable
A ________ is nothing but a name given to a storage area that our programs can manipulate.
Real
A single-precision floating point value.
+
Adds two operands. Example A + B will give 30
var
All variable declarations are followed by the ___ keyword.
operator
An ________ is a symbol that tells the compiler to perform specific mathematical or logical manipulations.
identifier
An __________ is a sequence of letters and digits, beginning with a letter.
Facts about Pascal
In 1986, Apple Computer released the first Object Pascal implementation, and in 1993, the Pascal Standards Committee published an Object-Oriented Extension to Pascal.
procedure, function
In Pascal, a _________ is set of instructions to be executed, with no return value and a ________ is a procedure with a return value.
standard data types
Integer, real, Boolean and character types are referred as _______.
GNU Pascal (GPC)
It is a Pascal compiler composed of a front end to GNU Compiler Collection.
Turbo51
It is a free Pascal compiler for the 8051 family of microcontrollers, with Turbo Pascal 7 syntax.
Free Pascal
It is a free compiler for running Pascal and Object Pascal programs.
Oxygene
It is an Object Pascal compiler for the .NET and Mono platforms.
