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发表于 2012-11-13 08:48:12
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1判断语句; r+ `8 S+ b6 I" E. `# x' N
if <condition> then) A, w8 S, j r" X
<statement sequence1>;
1 c5 X. Z7 A# d% e- ` elseif <condition> then1 }4 B/ Y: X) Q+ n- L
<statement sequence2>;1 F0 n- x" L' x/ b% E( D' v1 c
else 8 C& e- o- b1 l9 M' @! @! N
<statement sequence3>;
8 @. i% \2 x0 B4 ^7 Y end;
9 y J% C+ K" [5 I( [如果分支比较多，用：
! ~, y' V$ t2 v$ a8 Q' W inspect <expression>
% `! C7 w# f" j B1 S/ B when <constant_list> then
* s4 A8 Z- X& J$ J: P. f <statement sequence1>;4 }9 Z3 n5 G( P# g' `- m0 i# H7 x
when <constant_list> then
5 N# U" C' u/ X" E* t6 F <statement sequence2>;
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else
2 ?: X, j6 _, F+ q! V, H <statement sequence3>;7 P; E1 b* _7 J9 Z; i
end;8 @" P7 a6 W b
`3 d: V9 k4 g2 O4 F6 w& q2循环语句8 n$ y; f2 a5 s$ j7 s6 q0 i- x; Q
(1) from <statement sequence1>
1 [4 B: `% t) L until <condition> loop* c2 D( R" A. w6 c) b" z
<statement sequence2>;; c! R( T" n6 h* ?$ g% ~7 J
end;
5 g7 {5 n9 Q' ?5 f (2) while <condition> loop4 P' a3 C4 {& ]# F& o% p
<statement sequence1>;# q- S* t1 F) D2 e1 I* q
end;
1 H! c: A) U, d1 a (3) repeat & {$ V# g. o4 G4 b8 Y* g
<statement sequence1>;5 v; j; I" G& V4 t. T
until <condition>;
! d- I2 B6 l, i( \' m0 c (4) for <condition> to <condition> loop) G3 t# |2 j, a O: W, j
<statement sequence1>;0 N$ Q2 ^5 |9 {! r7 `: B
next;! S L- f) ^- D4 Z, y. y
3中断语句
! Y0 s9 J. M# \ waituntil <condition> prio <integer expression>;
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/ X) b7 O3 z( w$ B9 E以上为常用的函数！
1 `" i, W/ V7 p% ]" N还有很多，如有需要我把资料发到你邮箱里
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