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发表于 2012-11-13 08:48:12
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1判断语句# p0 S% X$ t. E8 }, w6 y- x1 H
if <condition> then/ a% Q% \. n, @- u# X' s- o3 ]
<statement sequence1>;$ |# d" x: O! H* ~& |
elseif <condition> then7 u( z9 L( L3 c6 a7 d, R5 p
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：
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when <constant_list> then) d4 o1 d, m3 D4 r- U
<statement sequence1>;6 {6 M3 D: |3 l) K. h& a; Y, n# p( ?
when <constant_list> then$ K4 H4 J% D% i
<statement sequence2>;, _' d5 k2 Y$ a; p
...4 I5 d6 H$ e: K; M- u' U5 q8 p% y! K) q9 P
else7 ~. `+ k {7 |* O( v5 D. l
<statement sequence3>;; j, M: r9 i4 F* c8 H: C0 \
end;3 G) s/ p8 n3 A' N/ I: o6 h. D
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2循环语句# E0 n7 G$ A' ?% q. s6 C
(1) from <statement sequence1>
* t- U3 p& F3 N& i! Q3 x until <condition> loop
- ? C& I' }5 w% L# _. R8 p <statement sequence2>;
* S9 L* Z0 Z4 t% O) t9 _$ X, v$ X" v end;
8 e1 c8 R' z' f) U (2) while <condition> loop6 `9 ^+ O# k! M3 c
<statement sequence1>;
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(3) repeat
/ b: n, x A' C <statement sequence1>;6 A0 \" b- M" [# W8 d% F; s
until <condition>;8 E# N; ^8 D E4 m' j" _
(4) for <condition> to <condition> loop. o# X: ]5 A( b. N
<statement sequence1>;
4 I- H5 r" E" d; A next;
. R8 c) a5 p9 {* ]: M3中断语句. Y# q4 Q& y+ G( ]& _
waituntil <condition> prio <integer expression>;
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' C8 `' c5 a1 l- k: }* r7 S以上为常用的函数！
& j/ _5 l+ r3 Y$ l# Z1 Z, M% M, L还有很多，如有需要我把资料发到你邮箱里
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