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发表于 2012-11-13 08:48:12
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1判断语句6 R0 _; p3 D" c) Y
if <condition> then4 ^- A! u7 z7 [& w9 T
<statement sequence1>;8 S1 ^0 Z7 N) e+ z2 ^
elseif <condition> then
3 _% n* K9 N) ~9 [2 A d. i/ ^* U) R <statement sequence2>;
# P" a* \) L5 d; J" E6 I else
7 e) a. L9 p( d1 f, y# O% i, o <statement sequence3>;
6 Y" s+ v9 F+ }& v2 K end;( x3 E3 o1 S# R0 `; \+ T
如果分支比较多，用：
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when <constant_list> then
9 [* T g5 d% r, y( g: T. z <statement sequence1>;& B/ ]4 i! g1 X1 J5 b4 {
when <constant_list> then" ?' k) _2 O# g& j e
<statement sequence2>;
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else- P Z; O. Y, k7 W8 D
<statement sequence3>;; p v* s2 r- t8 R. E$ s& M
end;% w! Q- N# j2 d8 D9 j$ t2 m
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2循环语句
8 I' @" N0 V4 F6 h4 Z) n. W (1) from <statement sequence1>
) B% P6 T8 S. g/ z5 u f7 | until <condition> loop
3 Z8 |4 T) P/ x3 g R) `2 L <statement sequence2>;5 ^$ a1 M3 ]8 U7 }6 i2 u
end;2 T' H$ t9 a$ ]1 x& q2 f# y8 Q7 G
(2) while <condition> loop- ^* o3 H$ o# r6 x0 x: r
<statement sequence1>;
" ~! M- W. h+ P# f# Y) l4 } end;
6 G/ b; \ b* f! ?6 r) {/ c U (3) repeat
# _; o0 Z: v4 S <statement sequence1>;9 d; O, a$ }: M0 t* h4 B& y8 t
until <condition>;, d, k: ]" o& x% j
(4) for <condition> to <condition> loop
7 z* ?9 B3 b1 Q5 j <statement sequence1>;4 s( c1 n% x5 d8 s! _
next;+ L3 O* ~* _3 N d8 i- j
3中断语句$ l, o# v3 a/ y$ D& d
waituntil <condition> prio <integer expression>;
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" I! s& B4 `4 y2 i9 z以上为常用的函数！; H" \: `. q0 I: B6 G( ]
还有很多，如有需要我把资料发到你邮箱里
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