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发表于 2012-11-13 08:48:12
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1判断语句 U$ |' u9 S' q# o
if <condition> then% _, v: ~& d5 E% _8 m, s9 H1 L
<statement sequence1>;
! q2 P! x) G6 T* ]8 f/ G) c elseif <condition> then" S6 E7 t! ~8 E {# T+ q* @& m
<statement sequence2>;) a' B! | C2 E: h/ M; y
else 5 j2 d+ p# d4 K
<statement sequence3>;
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如果分支比较多，用：" S. r ~5 o- X" z! J
inspect <expression>. g/ V, n; F& _+ u3 N
when <constant_list> then0 y4 j7 L) Y1 S7 _
<statement sequence1>;
! F5 K; Y" X) v$ E when <constant_list> then
3 k1 B. p6 X# P <statement sequence2>;
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else
' [0 b! i* Z6 v. {1 X <statement sequence3>;
' |' ~( i/ x4 H9 x' Q8 S+ f. kend;& ]8 f+ I' D) F6 t, w
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2循环语句, X6 l* ]8 m) C5 e8 K8 k# E7 A0 ~
(1) from <statement sequence1>
5 {/ r6 `9 n% [# N2 v until <condition> loop
) m* ]& f; n5 _! j+ J9 a9 Z <statement sequence2>;( c% N4 [; J7 \' M6 F
end;7 e% M2 X! `, Z
(2) while <condition> loop
, X' F- x1 ^5 Y, w <statement sequence1>;% _" m* T6 k( ^ e: z ~9 R3 n
end;; f4 P! Z+ O W/ X7 C8 Z
(3) repeat
! ]2 Q7 @' V) H8 B" Q <statement sequence1>;! e8 A7 h C! |$ q% ^. i5 i/ |' W* X
until <condition>;
# R; d* z! \+ V9 y; B* Y (4) for <condition> to <condition> loop
+ d- B1 N5 T( x1 B) K# W6 w- A8 G3 N% z <statement sequence1>;2 @, f3 f: I3 W7 @' x1 H' p& N
next;
4 E: z" x% u5 n) h9 N/ H" u9 l3中断语句
/ N6 C$ O& Y+ ~5 [2 w waituntil <condition> prio <integer expression>;
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0 Y# N- |+ |2 K2 Z3 u! u以上为常用的函数！! @6 T! t2 E5 Y7 c- ?( y. P
还有很多，如有需要我把资料发到你邮箱里 - U# X) N6 a, f
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