pascal constant declaration

::= | ::= | << /S /GoTo /D (subsection.10.8.11) >> 600 0 obj endobj ::= | endobj parameter section> {;} ); ::= | 236 0 obj

variable list> do , ::= {,

292 0 obj (Goto statements) endobj 169 0 obj 389 0 obj endobj 556 0 obj << /S /GoTo /D (section.5.2) >> << /S /GoTo /D (chapter.10) >> (Set constructors) 485 0 obj 5 0 obj (The raise statement) 632 0 obj endobj ::= (Array of const) << /S /GoTo /D (chapter.13) >> 473 0 obj << /S /GoTo /D (section.12.4) >> (Boolean types) | .

<< /S /GoTo /D (subsection.3.7.2) >> endobj endobj endobj << /S /GoTo /D (section.1.4) >> . 33 0 obj endobj part>. 184 0 obj 540 0 obj 16 0 obj endobj endobj 285 0 obj endobj (Pointers) (Definition) Elements in the record are delimited by semi-colons, while commas delimit elements of the array. ::= endobj endobj 240 0 obj 553 0 obj (CORBA and other Interfaces) 237 0 obj {,} : endobj << /S /GoTo /D (section.12.1) >> 168 0 obj 7. Here is a three-dimensional constant array, and the values represent their position in the array. endobj endobj | << /S /GoTo /D (chapter.8) >> endobj endobj (Logical operators) << /S /GoTo /D (section.14.1) >> endobj (Thread Variables) endobj endobj endobj 532 0 obj endobj endobj endobj 125 0 obj 120 0 obj 277 0 obj (Open array parameters) 497 0 obj stream Begin typing your search term above and press enter to search. << /S /GoTo /D (subsection.10.8.12) >> identifier>} : | label {, } ; 429 0 obj 356 0 obj 636 0 obj << ::= while 373 0 obj (Assembler statements ) number> | | 229 0 obj (Char)

77 0 obj 13 is the first row, third column, while 21 is the second row, first column. | 621 0 obj (Forward defined functions) endobj

<< /S /GoTo /D (section.13.4) >> ::= 157 0 obj endobj endobj endobj not , ::= | endobj endobj 81 0 obj endobj ::= | endobj 272 0 obj

variable> | , ::= , ::= | endobj 100 0 obj 20 0 obj ::= | > Declaring Constants. 448 0 obj (Exception handling nesting) section>}, ::= {, > endobj 624 0 obj endobj | < constant identifier> < nil> 469 0 obj , ::= for E end << /S /GoTo /D (section.8.2) >>

(Virtual methods) ::= << /S /GoTo /D (section.1.3) >> 513 0 obj (Class instantiation) These data types will be further explained in the next section. << /S /GoTo /D (subsection.1.3.4) >> 549 0 obj endobj variable list> do endobj endobj << /S /GoTo /D (section.10.7) >> << /S /GoTo /D (section.10.8) >> } : , ::= function ::= {, } | Constants come in three flavors: Scalars, records, and arrays. 376 0 obj

<< /S /GoTo /D (section.14.2) >> 308 0 obj endobj then | if 560 0 obj type> | | endobj (Identifiers) << /S /GoTo /D (subsection.9.2.2) >> << /S /GoTo /D (subsection.3.3.3) >> , ::= | << /S /GoTo /D (subsection.6.3.3) >> endobj (Delphi reserved words) << /S /GoTo /D (section.11.3) >> ::= : ( ::= 133 0 obj >= | > | in of {; } 372 0 obj 484 0 obj << /S /GoTo /D (subsection.3.2.5) >> (Comments) lBDY&jSC5Bp$k'"?|L'ee$rNzL3ejYW1"Wh'3[m^4(z/-)?dT1 132 0 obj | := 516 0 obj << /S /GoTo /D (section.2.1) >> (Symbols) A constant is an entity that remains unchanged during program execution. : ; |. } : , ::= ::= | ,"COM1g /] 8Wak pylwoW#-09}Yt(8A.IL^eX'oz%C[leZ1g()o0loh_O5endstream (Using functions and procedures) 21 0 obj A constant, whether a scalar, a record field, or an array subscript, may be used in place of a literal of the same type, or may be used anywhere a variable may be used with two exceptions. ::= endobj then it wouldnt let me have quote around the things.. no that wont work. endobj endobj (Class definitions) << /S /GoTo /D (section.9.2) >>

endobj 25 0 obj , ::= | .. 116 0 obj {,}), ::= .. (Set operators) << /S /GoTo /D (subsection.3.1.1) >> 284 0 obj endobj 385 0 obj ::= endobj endobj 601 0 obj endobj

<< /S /GoTo /D (section*.12) >> 592 0 obj << /S /GoTo /D (subsection.8.6.6) >> 545 0 obj (Programs, units, blocks) 364 0 obj endobj /Type /Page 409 0 obj endobj E (Real types) << /S /GoTo /D (section.10.2) >> ::= | ::= 500 0 obj Incredible Tips That Make Life So Much Easier. endobj endobj

<< /S /GoTo /D (section.11.4) >> (Ordinal types) identifier> 336 0 obj For example. 340 0 obj (Operator overloading) endobj 441 0 obj endobj << /S /GoTo /D (section.7.3) >> {, } (Constants) ::= << /S /GoTo /D (section.4.4) >> << /S /GoTo /D (section.3.2) >> endobj mod | and, ::= | > >then it wouldnt let me have quote around the things.. > >no that wont work, 3. (Parameter lists) (The tryfinally statement) endobj , ::= |
(varargs) << /S /GoTo /D (section.3.1) >> 432 0 obj Standard Pascal does not use or allow double quotes to mark characters or strings. 257 0 obj endobj 296 0 obj 221 0 obj endobj (Dynamic arrays) ::= := endobj (Assembler procedures and functions) << /S /GoTo /D (subsection.12.4.2) >> << /S /GoTo /D (section.13.5) >> ::= file of

Instead of using the literal 26 for the size of the array, let's use a scalar constant instead: Now, any place you need to reference the size of the array, you can just use LetterCount. 401 0 obj real, etc.) (Strings) << /S /GoTo /D (subsection.10.8.5) >> English(en) endobj 104 0 obj << /S /GoTo /D (subsection.6.3.1) >> endobj endobj ::= (Variant types) << /S /GoTo /D (section.4.3) >> << /S /GoTo /D (section.8.6) >> (Boolean operators) 289 0 obj << /S /GoTo /D (subsection.8.6.4) >> endobj ::= record 148 0 obj 348 0 obj As was said before, all the values given have to be of the same type, and you have to specify as many values as there are elements in the array. endobj endobj << /S /GoTo /D (section.11.5) >> 305 0 obj /Resources 635 0 R endobj (inline)

(zh_CN) , 1C - Constants (author: Tao Yue, state: changed). var {; } be paid a fee by the merchant. >> endobj

(Arrays) ::= | 596 0 obj (Arithmetic operators)

endobj endobj 505 0 obj necessarily indicate any affiliation or endorsement of FaqCode4U.com. (softfloat) function ( | type> | endobj 216 0 obj 197 0 obj /Parent 645 0 R 64 0 obj %PDF-1.4 << /S /GoTo /D (section.12.3) >> endobj endobj (Block scope) const { ; } 224 0 obj statement> << /S /GoTo /D (chapter.11) >> 360 0 obj section> {;} ) : ; (Introduction) 141 0 obj Here's a more interesting example in which several data types are used. expression> , ::= = | <> | < | <= | endobj endobj 268 0 obj

452 0 obj end, ::= | ; http://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_1/Constants&oldid=151931. 428 0 obj 241 0 obj ::= | ::= 552 0 obj endobj function | 577 0 obj langage remarque

172 0 obj }. 217 0 obj << /S /GoTo /D (section.13.3) >> 524 0 obj endobj 424 0 obj type>{,}] of |, ::= | 634 0 obj << (Using assembler) 572 0 obj endobj 620 0 obj ::= endobj /Length 2061 ::= goto endobj A scalar constant is a single identifier which is assigned a single value. 53 0 obj (Classes) endobj

96 0 obj 164 0 obj | , ::= {; ::= 344 0 obj << /S /GoTo /D [634 0 R /Fit ] >> (Blocks) 12 0 obj endobj (Message methods) type {;}; ::= = 24 0 obj ; ::= endobj

101 0 obj endobj mod | and endobj << /S /GoTo /D (section.8.1) >> label>}. 256 0 obj << /S /GoTo /D (chapter.7) >> endobj endobj endobj Deutsch(de) ::= array [> 437 0 obj endobj (Assignments) | , ::= 108 0 obj Pascal allows only constants of the following types to be declared: Pointer types (but the only allowed value is Nil). << /S /GoTo /D (subsection.3.2.3) >> endobj Press ESC to cancel. parameter> }), ::= | (Free Pascal reserved words) For record constants, the general format is. endobj declaration > | 56 0 obj 332 0 obj endobj endobj (Operator declarations) (Definition) 309 0 obj << /S /GoTo /D (section*.10) >> << /S /GoTo /D (section.8.4) >> (PChar - Null terminated strings) endobj endobj << /S /GoTo /D (subsection.9.2.8) >> 260 0 obj endobj 72 0 obj 37 0 obj 405 0 obj 436 0 obj Scalar constants are defined in the Const (constant) section of the program: For example, let's define some constants of various data types: strings, characters, integers, reals, and Booleans. endobj endobj endobj endobj | downto | | ::= {,
( {, ::= 261 0 obj endobj 417 0 obj endobj 533 0 obj Conversion of Pascal Real constants to C/C++ float constants, 4. The following table provides examples of some valid constant declarations: program const_circle ( input, output); const PI =3. 85 0 obj endobj ::= if << /S /GoTo /D (section.6.4) >> The value stored in a constant cannot be changed. endobj endobj , ::= | do , ::= repeat (Reserved words) var |, function | endobj (Enumeration types) : ; |

endobj {; } end; ::= | (Modifiers) (Modifiers) 400 0 obj endobj endobj endobj As used in the example of array of record, two-dimensional arrays are described by encapsulating each of the second dimension in parentheses. 465 0 obj 185 0 obj ::= | 612 0 obj endobj 165 0 obj ::= |
<< /S /GoTo /D (section.5.4) >> endobj ; | endobj endobj ::= | endobj endobj 528 0 obj 536 0 obj endobj

| | > (Exception Statements) 57 0 obj endobj endobj 329 0 obj ::= << /S /GoTo /D (section.2.2) >> << /S /GoTo /D (subsection.10.3.5) >> 264 0 obj {}, ::= . 89 0 obj endobj << /S /GoTo /D (section.7.2) >> 252 0 obj (Declaration) part> /D [634 0 R /XYZ 91.9253 757.9346 null] 297 0 obj >> endobj endobj 80 0 obj 453 0 obj xRMO0WJ$vR'p(]:&V6$=i/&\g/Jpp 156 0 obj {; } until [ {, }], ::= . ::= {;
may 212 0 obj value>, ::= with ::= repeat endobj A record constant is a single identifier holding one or more separate values in a structured form. << /S /GoTo /D (subsection.6.3.2) >> All of the values must be the same type, whether it is a number (byte, word, integer. endobj endobj endobj definition part> > ::= begin ::= + | - | or 225 0 obj 117 0 obj (Exceptions) type> | | , ::= array [ }, ::= | << /S /GoTo /D (section.4.2) >> endobj endobj | downto := do , ::= to << /S /GoTo /D (chapter.14) >> endobj statement>, ::= := 301 0 obj 464 0 obj 41 0 obj 369 0 obj endobj endobj ::= |

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(Structured statements) (Simple statements) 609 0 obj | | >