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发表于 2012-11-13 08:48:12
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1判断语句# i2 S! A2 w( @
if <condition> then
' [6 Z5 y# [$ G0 x- g6 u: {$ o <statement sequence1>;
* F; r2 c- C& ?0 V& S1 I8 b: Y2 }/ z4 w elseif <condition> then
+ [+ p2 M' I/ y2 C4 n. R& k <statement sequence2>;
! `7 s! E' N: m5 u else
- [7 J: c p+ [" x7 M @2 b <statement sequence3>;9 ]9 k4 R9 X' n( ]/ Z$ {# _: f
end;4 \) M! c! A0 ]& R/ x
如果分支比较多，用：
) a3 E% a9 v2 E inspect <expression>
% ?1 a; F N! _0 l) }$ V$ a when <constant_list> then
$ `) |2 V# y& Q$ u <statement sequence1>;
: ]( l+ j8 f8 l4 m4 c2 k when <constant_list> then
7 R9 w p$ |4 h+ Q3 k& a: ]2 N% ? <statement sequence2>;
( D1 G" v/ D) U) A0 x. \ r! e ...% `! S3 x8 R! v; z+ Y, K" m3 o
else
0 Z( x% X, d& C) J* x1 r3 | <statement sequence3>;8 W$ V4 W" u" D; D8 {/ z& m5 U
end;9 }3 d: f- b3 A9 K' y/ O9 y
! Z' I# C4 \- l" T: x+ W% [$ ?2循环语句
) n" m& D5 i; C8 A) @/ c8 N (1) from <statement sequence1>
) f, x" I. K+ k6 P& q until <condition> loop
) |3 l" ?* q- `/ U: U4 ] <statement sequence2>;8 r" x$ F' R* ~9 V
end;2 U# J* l& Y4 \) S
(2) while <condition> loop8 T. ^7 C N P
<statement sequence1>;# o3 J8 C" J s# c, `( P
end;
. [3 X& r3 E D" g# R+ q (3) repeat
, W5 C+ ]# R, I2 [ <statement sequence1>;* L3 c: l; c% f) Y4 F' }# p+ v3 _
until <condition>;
( H8 p; w/ c; \5 v8 t* ?$ K (4) for <condition> to <condition> loop6 ^" S, O: l3 h: e$ z8 s; X4 Z
<statement sequence1>;' R5 `4 r v; p7 N/ B
next;2 V8 V3 Y, P7 O2 D, p6 @
3中断语句
: a4 c8 O) ^ o waituntil <condition> prio <integer expression>;" D& p& [: R" A9 \9 b' X4 x
4 v- D& A6 n! t8 h% P% R9 {
; z' }! ~% h6 b- D( Q' e. u) f# T r以上为常用的函数！# [" k. ^0 y% W$ C9 u( {# u( a
还有很多，如有需要我把资料发到你邮箱里
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