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5 DPL




 

 

, . , , . , . . . , , , . , , , , .

, . , [10]. , . [15], .

DPL (Demonstration Programming Language). , , , .

 

DPL

 

DPL , . , , . , , , , . , . . , . DPL .

 

 

, , . , :

, , ;

, , , .

, , (, , , ), , , , , . . . , , , . , . , , .

DPL. , (). , .

 

$ = "A"|"B"|"C"|"D"|"E"|"F"|"G"|"H"| "I"|"J"|"K"|"L"|"M"|"N"| "O"|"P"|"Q"|"R"|"S"|"T"|"U"|"V"|"W"|"X"|"Y"|"Z"|"a"|"b"|"c"|"d"|"e"|"f"|"g"|"h"|"i"|"j"|"k"|"l"|"m"|"n"|"o"|"p"|"q"|"r"|"s"|"t"|"u"|"v"|"w"|"x"|"y"|"z".

 

$ = "0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9".

 

$ = ( | "_") { | | "_" }.

 

$ = | .

 

$ = | | |

.

 

$ = "{2}" {/ "0" | "1" /}.

 

$ = "{8}"{ "0"|"1"|"2"|"3"|"4"|"5"|"6"|"7" }.

 

$ = ["{10}"] {/ /}.

 

$ = "{16}" {/ |"A"|"B"|"C"|"D"|"E"|"F"|

"a"|"b"|"c"|"d"|"e"|"f" /}.

 

$ = _ | _

"." [_] [] | "." _ [].

 

$ _ = {/ /}.

 

$ = ("E"|"e")["+"|"-"] _.

 

$ _ = {/ | | _ |

/}.

 

$ = "/*" { } "*/".

 

$ = """ { | """"} """.

 

, " ". - . _ , ASCII . , , , . , .

, . , . . , . , : , _, . . , .

. , . "/*" "*/". , , , , . , . , :

", """" ".

 

, . DPL :

 

$ _ = abort | begin | case | end | float | goto | int | loop |

or | read | skip | space | tab | var | write |.

 

$ = "(" | ")" | "[" | "]" | "," | ";" | ":" | ":=" | "*" | "/" | "%" |

"+" | "-" | "->" |"<" | "=" | ">" | "<=" | ">=" | "!=".

 





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