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发表于 2012-11-13 08:48:12
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1判断语句
- E1 V0 e/ l9 U5 ] if <condition> then
* c! h7 T0 T' X1 q <statement sequence1>;, L: P0 _$ a$ j* U+ o! `9 \
elseif <condition> then
4 V; P3 ^ b. n7 i <statement sequence2>;
8 f1 ~2 }8 s8 P% S$ L6 ?: P8 C- B else * L0 e. x1 ?9 L" P7 w S. \0 v
<statement sequence3>;4 ^: x; \7 r2 q# D6 W9 X
end;
/ g" C: P! d% z如果分支比较多，用：
' V( ?" h. G" _- m inspect <expression>/ ?! C3 c$ k' f8 l; W; G
when <constant_list> then
( c+ I( j0 W7 {* U& u( U* t <statement sequence1>;
@0 E4 o D9 N3 o when <constant_list> then
z3 O. j# ~2 q z4 O( \ <statement sequence2>;
+ x1 k) p# ?( s8 B1 a+ c ...
" J% E3 {$ @2 u# [2 X else) d: ?: i) r1 U2 b- h9 @8 n& C
<statement sequence3>;
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+ }" n- k/ p: f; Q3 G9 T: W/ z
2循环语句
' |% v1 R( _/ S! ]$ a$ h (1) from <statement sequence1>1 H& k/ c5 i5 k+ C" K: f" ]7 i o+ m
until <condition> loop
[; c* W: _3 ~# Z8 [9 W k <statement sequence2>;
( q0 ]7 |- e% M5 z end;0 J7 [/ L9 h& Q0 M3 u! E& |+ y
(2) while <condition> loop
# \" B/ M* @ G9 C9 P' j <statement sequence1>;$ m0 W ^% M7 Z% s
end;2 Z5 [5 d% t2 V! j; G7 B
(3) repeat
* b+ ^8 l5 L, R. X& J <statement sequence1>;! W% {% @0 o: e7 d6 u
until <condition>;
; ?) }7 e% \# V. d2 g (4) for <condition> to <condition> loop7 o" N) ?0 d+ M( i7 T1 b: t
<statement sequence1>;
8 x0 q4 F1 m+ e% |! f, B next;3 {3 o# B. b% s
3中断语句
, |% B! R- F1 X5 e/ _ waituntil <condition> prio <integer expression>;
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以上为常用的函数！
( U6 ~. @) W4 t* {+ K还有很多，如有需要我把资料发到你邮箱里 ; V# r, n4 f0 k" Q9 ^5 Q
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