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发表于 2012-11-13 08:48:12
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1判断语句7 I. j4 A: ]4 j4 _7 x
if <condition> then6 n# C0 W1 f0 W6 z4 x) K' M% j
<statement sequence1>;8 K) D$ _! l C
elseif <condition> then
! g, f4 `+ }: y: R& y <statement sequence2>;! ]! \( w" a! y' s& u( T. F) ^
else ) A; e0 v+ v1 a
<statement sequence3>;) z6 v: E `; ^5 t4 T+ z, H- V
end;- \6 {' }% [, a1 w! X
如果分支比较多，用：$ U( }( E" \0 K; K) B: Z! K
inspect <expression>
) e9 c) f/ o1 \4 n9 {+ L8 h when <constant_list> then
6 U( Y! e+ E! y7 G3 w <statement sequence1>;* w* m8 _0 W5 C1 i& l
when <constant_list> then
( w1 X( z* b1 b# d6 l% v3 t <statement sequence2>;6 I+ [ Y+ ]6 P1 a/ f# C# i! r
...
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<statement sequence3>;
1 Z6 R R' \+ }* Q) f" H2 @- Cend;+ t/ H% B7 u5 w
1 b. l* U9 T5 J; ?2 e6 P2循环语句2 {" A1 n! E: H- o3 U" E
(1) from <statement sequence1>, }1 p R5 d* F. k' C; ]
until <condition> loop% P7 b8 X1 _ J8 y
<statement sequence2>;
" [2 t' w/ I( H$ T end;
q( q" f; l8 ^/ p. L& T8 n (2) while <condition> loop4 q8 a: U( ~+ `% W7 V% p- ^
<statement sequence1>;0 |' W3 {# @0 O- p! b2 R
end;; W6 d" P' k2 p+ x. s
(3) repeat " e9 V* I$ V0 \+ Q* Y$ J4 w
<statement sequence1>;+ {2 O2 @8 s2 |
until <condition>;6 |5 K$ ]" u- [
(4) for <condition> to <condition> loop: U6 V; p- Y6 k+ T- M
<statement sequence1>;
) N6 t% }5 i# i. ~ next;3 o# @! U! `; t, x# v" z
3中断语句
1 O# j' }6 a' i2 Q' U waituntil <condition> prio <integer expression>;( M$ y9 D3 K, b+ C: ^- v: h
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v5 |9 |3 s- Z6 m+ X) E6 K以上为常用的函数！
( X* a8 @6 Y1 O) ~4 S: f5 P还有很多，如有需要我把资料发到你邮箱里 9 p4 w3 s2 X3 M2 U* i
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