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发表于 2012-11-13 08:48:12
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1判断语句7 m A2 S7 I: e1 D$ a! t6 p
if <condition> then0 X! n1 R4 `3 ~* e: g! M/ Y* C
<statement sequence1>;
5 X7 z9 R6 X; O5 c. v elseif <condition> then) F' p! [. I: x$ i1 W. o
<statement sequence2>;, J s% r/ N( K2 ?4 A
else
2 ], l; A' J# x: x <statement sequence3>;1 c ?9 k7 K1 C
end;
! G* J" P4 @ o U" d如果分支比较多，用：& x# O, i4 j9 f* H$ S& h, b" N: j
inspect <expression>
$ ]0 {# `& {- I- y9 }5 r9 I, B; L when <constant_list> then
/ [) @; k% r6 |' t <statement sequence1>;
; h* r& l" t9 P( | when <constant_list> then
2 C# H( h. p. R5 x) S) k; X" R {; U <statement sequence2>;4 I6 x; l h% F% C" _2 z
...
; ~3 X0 m& Y+ x8 N else
: s4 s0 k9 Q3 h! g3 f2 f1 S <statement sequence3>;
; l9 i8 u& x; v5 X0 H1 nend;5 e" P/ s0 T6 N2 T% [; @
/ E5 i U2 e; [7 F: g$ D! X8 f5 r
2循环语句 |- H+ R+ A% s, r/ x8 f4 W' A
(1) from <statement sequence1>8 f1 B! W1 U2 L+ y
until <condition> loop
3 j/ g, }3 C; x# O" A <statement sequence2>;7 o+ |! O |9 L5 ]
end;
9 g1 a5 q* s" H' m (2) while <condition> loop2 u- w, Y# i3 L7 B) C1 g9 K
<statement sequence1>;+ `9 J& \8 Z# v8 O
end;
6 l) s! ^/ O- u' V4 B/ r8 x+ c (3) repeat 9 V9 I; Z* y* f0 {3 U
<statement sequence1>;
* c% m, g3 B% }7 s until <condition>;; w! S& q+ T6 k3 b
(4) for <condition> to <condition> loop7 U. U) I8 {* s' I* M9 n
<statement sequence1>;* z) R2 n" m+ z
next;
5 ~, |' G" R) }3中断语句' J; T1 J5 x* \. l5 r, D5 `- H
waituntil <condition> prio <integer expression>;" G3 k5 }: Q8 I( }% @& m- C$ Q& T
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% B* A( [9 D: A: [: o* }! a以上为常用的函数！
; |/ `1 J$ h; C2 g- Y; Y% I还有很多，如有需要我把资料发到你邮箱里 1 ~; U" O$ M8 \
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