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发表于 2012-11-13 08:48:12
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1判断语句
; U/ a7 g O4 { if <condition> then
$ m# v: f2 q/ K+ \% [" j8 ? <statement sequence1>;6 J$ I7 Z8 ?' y0 ]$ M
elseif <condition> then
; G& x, D- P) G <statement sequence2>;
; V% ?3 i/ U' k! F9 W% t5 H else
' O4 o7 g, v+ f/ R: c <statement sequence3>;
# y6 V- d8 \- Y% p: L8 s; }3 E end;
4 R t0 L( T9 D, n3 A如果分支比较多，用：
0 ^) I5 S$ s8 i0 U, k$ @) q. U inspect <expression>
/ j; Z& ^5 ^$ q7 l" ~ when <constant_list> then! A: j& {, w- h1 J3 T! c' f
<statement sequence1>;
4 k8 m6 d, x& Q% ?. I/ w# U' X% m when <constant_list> then
' ?, o3 F" c7 [! F. N, I3 v. G <statement sequence2>;
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else9 a2 d$ A" m" p( L* V
<statement sequence3>;
7 S6 U7 y5 R: I1 F% ?end;
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2循环语句
6 h! }. E* e: T2 i" c. u5 d- G (1) from <statement sequence1>- ^# ~# X- G; [% A9 b% z" Q
until <condition> loop
' s2 \5 n) T' R" q: Y( Z <statement sequence2>;
' a( S* c& y7 e# G end;
# H0 m" |+ }" p" z7 ~$ Z2 k. D (2) while <condition> loop8 b: u- g4 x3 p
<statement sequence1>;0 j8 D e# D w8 Z" P7 T( M
end;% j9 B9 }0 C- [, u& }. |; P
(3) repeat " o/ F! c2 Q5 M# i1 j) q
<statement sequence1>;
' u! k1 N; C) B- H! o( P until <condition>;/ f! Y; \: E( T
(4) for <condition> to <condition> loop
4 ~: g. F0 j! h! W C& M2 u( h <statement sequence1>;: i+ C) I6 V9 T/ _
next;, m2 h6 G& Y& K) G& ?9 Z9 ~. @
3中断语句; N c- S* i' R8 m& _7 ~: w
waituntil <condition> prio <integer expression>;
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/ M2 f* J" i2 W7 v以上为常用的函数！
- F# K' T! W& E' t, X$ T- V. @- b还有很多，如有需要我把资料发到你邮箱里
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