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发表于 2012-11-13 08:48:12
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1判断语句( s7 k2 I* J: g6 A
if <condition> then2 ]; D r% v' S3 h% c& x4 u( {
<statement sequence1>;
/ M% j8 c& B0 G- W8 m# l elseif <condition> then% M# r/ s2 \# c4 Z I6 f
<statement sequence2>;' j# S/ _- s7 t9 P, r+ l
else
) N$ D4 a, Z K& B7 b% S; Y2 R. ` <statement sequence3>;, I) G f2 C1 |9 V; r1 b
end;: F$ q6 }: E2 C9 ^
如果分支比较多，用：
# h Q2 h) [$ I) g% U inspect <expression>
2 K2 Y3 f5 g: E/ F when <constant_list> then
' J* Z: C9 t* v" F <statement sequence1>;% X( `) _" B& [# d
when <constant_list> then
2 `: A% E( @9 U! k5 M: J: K: \ <statement sequence2>;
6 P% `& k. [' v. D( K6 { ...
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<statement sequence3>;
- W% j7 o! x1 y2 B# `# e9 Wend;
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2循环语句. ^! \( u) F P- C4 Z
(1) from <statement sequence1>5 H0 ~3 W1 r/ S2 J
until <condition> loop
$ P; v, {1 B$ ^: ~& n0 _ <statement sequence2>;
; R5 @/ @ Z9 K end;) _8 Z4 }3 M9 a! Y! u
(2) while <condition> loop. O. C) d. F ]' e1 ~
<statement sequence1>; o/ x3 j1 o6 T/ `) \1 x
end;
4 C5 V4 b& l$ b* } (3) repeat + e, i" V. U% s$ `
<statement sequence1>;' O( A3 s+ w! x" V" m
until <condition>;; h( i, d4 A! X# ~4 i
(4) for <condition> to <condition> loop
7 G* ~( v, P. F0 Q6 h <statement sequence1>;6 H, k# V8 t k' G2 _* o* S% V2 H' Z
next;' L* p/ F/ o( \" I% ]
3中断语句
$ \- S. m7 I) @% ^: z7 {$ T& h waituntil <condition> prio <integer expression>;+ p: ~3 }% f8 r% v/ `
' w% d, i9 r1 h- J1 t' D X3 q7 N8 [0 v" s+ ]
以上为常用的函数！
1 j$ Q2 r, [/ A/ y' N还有很多，如有需要我把资料发到你邮箱里 ! [" A+ V& ]" y4 i* N
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