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发表于 2012-11-13 08:48:12
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1判断语句# U6 X0 o" L' [" E# g/ L- s
if <condition> then: [) r' v* V- A" @4 j
<statement sequence1>;
5 w& r: v( E4 U$ H elseif <condition> then; C7 _1 N6 b1 s- ^' x; h' q
<statement sequence2>;8 B+ e1 ?# \7 ^ B$ n. s
else ) Y o+ V$ e9 u
<statement sequence3>;
* L0 [/ N- }: [3 c. y% ~ end;
5 R+ ` C3 {) V& @8 S& m, I! X' q如果分支比较多，用：
: N& c: _$ |1 Z inspect <expression>
3 x+ Z- s ` d. E) s when <constant_list> then' U( b( ^# U" ]- }
<statement sequence1>;9 ]: e: D; W9 H) |
when <constant_list> then: V$ b7 c5 H6 \# f
<statement sequence2>;: j& u, p! u0 u& p2 y2 o5 R4 u5 f' ~- o
...: ^3 B7 Y$ Z, C( j1 F
else2 x0 n4 ?8 @$ @( @
<statement sequence3>;
* |) z& S: b/ W( L. ^end;
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9 ?! K; N) d" H2循环语句
4 r( t% t7 D6 R+ w# t# s (1) from <statement sequence1>
& _5 L9 g* g1 G, V$ s4 A until <condition> loop
8 g9 A* F# r6 K7 _5 Q+ f) M' b5 E <statement sequence2>;6 t1 T. i. J# C1 b( b+ W
end;
' Q p1 t9 `! i! H% P5 U# { (2) while <condition> loop" _- H6 {* h) w7 ^! k Y: F i3 P% r
<statement sequence1>;
8 G, D5 v9 Y/ @/ U; i' _8 J end;9 [& H9 V" U' j" B
(3) repeat 7 [5 A2 P# Z0 p) _ w
<statement sequence1>;6 k! ~* X: o" U# L+ b
until <condition>;& c g7 C3 y7 b) a1 q6 X
(4) for <condition> to <condition> loop6 X( l2 f# A7 r& p4 e$ C- ~; V
<statement sequence1>;( W8 Y) f2 E% v+ n; u0 y- P( z
next; ?, `0 Z* a9 Z( u9 O/ G
3中断语句& O. I% F! R) g3 M/ {) Y
waituntil <condition> prio <integer expression>;
, q9 U2 J/ Y+ J* P7 s/ y1 @2 R, Q) \( i
' x$ a0 X" a0 F/ v0 W& m以上为常用的函数！
' \+ C6 V8 M! Y6 e$ {还有很多，如有需要我把资料发到你邮箱里
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