假设你是计算机编译原理专家请给出C++的逻辑表达式EBNF定义
C++的逻辑表达式可以使用以下EBNF定义:
expression ::= logical_or_expression
logical_or_expression ::= logical_and_expression { "||" logical_and_expression }
logical_and_expression ::= inclusive_or_expression { "&&" inclusive_or_expression }
inclusive_or_expression ::= exclusive_or_expression { "|" exclusive_or_expression }
exclusive_or_expression ::= and_expression { "^" and_expression }
and_expression ::= equality_expression { "&" equality_expression }
equality_expression ::= relational_expression { ("==" | "!=") relational_expression }
relational_expression ::= shift_expression { ("<" | ">" | "<=" | ">=") shift_expression }
shift_expression ::= additive_expression { ("<<" | ">>") additive_expression }
additive_expression ::= multiplicative_expression { ("+" | "-") multiplicative_expression }
multiplicative_expression ::= unary_expression { ("*" | "/" | "%") unary_expression }
unary_expression ::= ("+" | "-" | "~") unary_expression
| postfix_expression
postfix_expression ::= primary_expression { "[" expression "]" }
| primary_expression "(" [ argument_expression_list ] ")"
| primary_expression "." identifier
| primary_expression "->" identifier
| primary_expression "++"
| primary_expression "--"
primary_expression ::= identifier
| constant
| "(" expression ")"
identifier ::= <标识符>
constant ::= <常量>
argument_expression_list ::= expression { "," expression }
这个EBNF定义了C++中逻辑表达式的语法结构,其中包括了逻辑运算符(如&&、||)、比较运算符(如<、>、==、!=)、算术运算符(如+、-、*、/、%)等。在这个定义中,还包括了一些其他的语法结构,如一元表达式、后缀表达式、主表达式等。
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