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发表于 2012-11-13 08:48:12
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1判断语句: }$ e4 A% Z2 N# u
if <condition> then
0 m' t, O; {/ i, o1 p <statement sequence1>;
( t6 S4 b$ {9 v+ G x elseif <condition> then- p4 e x9 m7 ]: M$ L/ x1 p
<statement sequence2>;9 X3 F e8 l1 b+ J% \
else
( g# ?& a/ a3 K9 Y; |7 Z; f9 L+ o <statement sequence3>;7 H* O W9 E! c, T+ [: m& W/ L
end;
$ s" Y( F1 t* [: u+ o如果分支比较多，用：
; U( F: a2 ]: L5 `+ P- A; ?9 H inspect <expression>5 |# Z) }2 r# G0 U& Q5 \* N$ h
when <constant_list> then% I% K4 o5 e, s! W3 E, k
<statement sequence1>;
) ^! R2 N; \* n1 Q1 r0 ~; f when <constant_list> then2 O. H3 l8 v" m& m) T
<statement sequence2>;
) u# w( U( [$ f n& \1 w3 j7 m ...
[2 r5 S5 V9 y" n4 e! Z% Y else
) M. S3 Y1 s$ X& N" }( v2 z+ V <statement sequence3>;. i. t# b' A. y7 B1 O& I
end;
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2循环语句
/ S# O+ U2 p4 [: y4 K$ u* @ (1) from <statement sequence1>
0 l+ ~( n9 t" `1 D! c until <condition> loop8 g( g! `( \$ F3 X+ {, Y3 j: U8 d
<statement sequence2>;% u' T1 M; t+ T' u- W! W2 j) w
end;
* Z: D; l1 @0 b# g. {1 s (2) while <condition> loop
8 m) g% R1 ]* n* l; U' H/ n+ G" ] <statement sequence1>;) K" ]3 S* L2 T6 l
end;
, E' Q/ Q9 b3 O0 ^, L (3) repeat
& n5 e" s$ [# t8 P, ? <statement sequence1>;
" o# \5 H( ?7 n+ n! c until <condition>;3 N8 L& S; K' H6 Z8 _
(4) for <condition> to <condition> loop7 b- D6 b5 K4 m; y( @
<statement sequence1>;' d8 [% i. ^# p: h# q
next;
( c* R* w3 b3 N$ L3中断语句9 G! P/ G2 f' ^& p6 S
waituntil <condition> prio <integer expression>;
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0 `2 {2 e* E, M1 O( h
以上为常用的函数！; s0 y1 Q. A y( O9 Z O
还有很多，如有需要我把资料发到你邮箱里 5 ^3 Z' ~- P% w8 m5 o4 N+ P
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