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发表于 2012-11-13 08:48:12
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1判断语句, z' _; n0 Y/ l( d: ^5 p
if <condition> then
6 I& k e4 p: j4 {3 o% S! c2 w <statement sequence1>;. Z: B$ W. o- ]* K
elseif <condition> then% {, e* m3 {6 J1 f% S# l
<statement sequence2>;
! ]) n& d4 K- x! N$ c/ b else
3 n% u& J: Z g <statement sequence3>;
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如果分支比较多，用：
, E" I! d' i2 ~4 S2 z& {% q2 | inspect <expression>
1 u% Z. x+ c/ Q, U when <constant_list> then. G8 l: P( u8 X6 Q! p
<statement sequence1>;1 I/ J6 e4 I7 j' e9 I% X* y
when <constant_list> then
; j+ Z9 ]8 H- k* r0 f- S" Q <statement sequence2>;
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else
7 r. [7 \ D$ T. z' Y <statement sequence3>;
0 z/ l* M0 w2 x7 e8 H/ s1 Dend;
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! @0 a- F/ u* _2 [2循环语句
, O+ F0 e" U8 ~2 t) d# s7 n* E (1) from <statement sequence1>
" N R1 W" Q. B; O1 ^ until <condition> loop% Z: I5 M8 E+ q. |6 u Q" q
<statement sequence2>;6 w2 z# l# J' v
end; V$ e o# ~( N7 `, q# t
(2) while <condition> loop
( K6 l& Z& T+ Y4 l8 o <statement sequence1>;
; ]* W0 u$ T/ D8 M4 \ end;
1 ^4 Q& \0 L3 v7 V/ v0 ~ (3) repeat 6 J: H/ I* L, g* x6 u( z' U. {
<statement sequence1>;! {2 L/ q$ V; x$ Z1 [8 ^
until <condition>;
, M$ p x1 A) V8 r% Q: ]+ i7 Q/ m! a (4) for <condition> to <condition> loop
' O/ o( N$ M* ?9 _* Y, g <statement sequence1>;
2 \: K- w! h5 w% g0 R1 \) ? next;8 J5 J u7 C0 [' E1 ~" ?, L
3中断语句% X/ i! b% K- _- u
waituntil <condition> prio <integer expression>;
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! I2 S/ v1 e- ]' U, `以上为常用的函数！; Y, q8 n) N$ {# [5 b' j4 _5 l7 b5 ?
还有很多，如有需要我把资料发到你邮箱里
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