. - 3GL   - 4GL   5GL  

() . 8- . , , (, , . .) , . . . IBM 8- , . IBM PC . .

MS-DOS ASCII (American Standard Code for Information Interchange), ANSI (American National Standard Institute), Windows. , .

ASCII ( 866) 128- . ( 160) ( 175). , ( 176 223). 224- . , , , ( -240) ( 241).

ANSI ( 1251) 192 ( ) 255- ( ). Windows ANSI . , , 168 184. , , ( "~").

( ) ( ) . QBasic , $, , DEFSTR c-J, DIM ...AS STRING. char, . . ( char), ( string).

.

. (char name [5]="";) (strcpy (name, "");) 5 :

name[0] = 'B' ;

name[1]='';

name[ 2 ] ='' ;

name[ 3 ] ='' ;

name[4]='\0';

string :

const

name : string[4]='';

writeln(name[l], name);

.

. () (QBasic) , . 0. () ( ). . , , 255 . pchar.

      . - 3GL   - 4GL   5GL  

, , , Deployment diagram - - , .




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