以下是一个示例,展示了如何在Prolog中实现一个嵌套的if-else语句: 代码语言:prolog 复制 % 定义规则 check_value(X, Result) :- ( X > 0 -> ( X > 10 -> Result = 'X is greater than 10' ; Result = 'X is between 1 and 10' ) ; Result = 'X is less than
Prolog是一种逻辑编程语言,它基于形式逻辑的概念。在Prolog中,程序被表示为一组规则和事实。逻辑编程的核心思想是通过声明性语句来描述问题的解决方案,而不是通过命令式语句来逐步解决问题。 if-else结构 在Prolog中,if-else结构通常通过使用条件(clause)和否定(not)来实现。Prolog没有直接的if-else语句,但可以通过以...
{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}
ELSE ELSEIF ELSEIF2 ENDE .ENDIF ENDM ENDP .ENDPROLOG ENDS .ENDW EQU .ERR .ERR2 .ERRB .ERRDEF .ERRDIF, .ERRDIFI .ERRE .ERRIDN, .ERRIDNI .ERRNB .ERRNDEF .ERRNZ EVEN .EXIT EXITM EXTERN EXTERNDEF EXTRN .FARDATA .FARDATA? FOR FORC .FPO FWORD GOTO GROUP .IF IF IF2 IFB IFDE...
ELSE ELSEIF ELSEIF2 END .ENDIF ENDM ENDP .ENDPROLOG ENDS .ENDW EQU .ERR .ERR2 .ERRB .ERRDEF .ERRDIF, .ERRDIFI .ERRE .ERRIDN, .ERRIDNI .ERRNB .ERRNDEF .ERRNZ EVEN .EXIT EXITM EXTERN EXTERNDEF EXTRN .FARDATA .FARDATA? FOR FORC .FPO FWORD GOTO GROUP .IF IF IF2 IFB IFDEF...
IfThenElse Rule IF (mammal) and if carnivore Family is cat and Color is brown THEN Animal is lion In Prolog the same rule is: Animal (mammal):... P Singh,A Sharma - 《International Journal of Engineering Research & Technology》 被引量: 0发表: 2012年 Application of expert system techniq...
(a<b); else e=a,a=b,b=e; if(b<c); else f=c,c=b; if(a<f)b=f; else b=a,a=f; if(c<d); else g=d,d=c; if(b<g) c=g; else c=b; if(a<g) b=g; else b=a,a=g; printf("从小到大的四个数字abcd %d,%d,%d,%d\n",a,b,c,d); } 这个程序必须输入5 3 2...
Except prologues are like anything else: when used and done right, they work very well. Reply K.M. Weiland | @KMWeiland says April 30, 2015 at 1:39 pm Totally agree. There’s an exception to every rule, and that’s just what the prologue should be: an exception. Reply ...
In the sense of material implication, 'if p then q' is equivalent to 'not-p or q' (or 'not-(p and not-q)'). Each construction has the same truth-value for the same truth-value of p and q. Material implication accommodates nesting but does not accommodate 'else'. It is possible...
ELSE ELSEIF ELSEIF2 ENDE .ENDIF ENDM ENDP .ENDPROLOG ENDS .ENDW EQU .ERR .ERR2 .ERRB .ERRDEF .ERRDIF, .ERRDIFI .ERRE .ERRIDN, .ERRIDNI .ERRNB .ERRNDEF .ERRNZ EVEN .EXIT EXITM EXTERN EXTERNDEF EXTRN .FARDATA .FARDATA? FOR FORC .FPO FWORD GOTO GROUP .IF IF IF2 IFB IFDE...