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发表于 2012-11-13 08:48:12
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1判断语句
* g& X) V& M) y1 [/ J w' W+ D if <condition> then+ r; r; y0 X" c; {' H
<statement sequence1>;
4 h: U1 R6 L) d5 K- s6 N elseif <condition> then, `1 ]# ?7 t; u- z% }' H- {* J
<statement sequence2>;0 A6 S# r0 d1 |. g x
else h7 v/ U! v4 @! U% a- i
<statement sequence3>;
& ~( U" d' ^! r end;
9 k+ q5 u+ ^- b! u如果分支比较多，用：
2 o2 y, B5 y6 N: s/ n$ ~ inspect <expression>; n- y1 }, d4 Z9 T% x3 s( s
when <constant_list> then) _' E$ B; |% J5 z4 u, G0 B& j
<statement sequence1>;$ w, P" Z- B8 j8 m6 e! M- b4 ~2 u
when <constant_list> then
. b' ?+ y8 d$ i2 p& j/ E4 S <statement sequence2>;
" N5 [2 P- M/ L/ t) D ...& U: f5 Y0 P7 V/ M5 p( c
else
& F# @" d( ]( K! E& B <statement sequence3>;# ~5 K7 E% g; @/ f9 s$ D+ j0 O$ t$ v
end;' X5 }3 f C- B# T
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2循环语句
5 f4 \) ~* C3 O- j# s# p (1) from <statement sequence1>8 @" X3 [/ K* X9 a& |! r: C& T. X
until <condition> loop5 c$ }+ ?" Y+ g/ d8 O% i' p! T
<statement sequence2>;4 O' `9 q, O5 |6 ]: s$ q- a2 F
end;
e2 I. w( j6 z% e; A' o (2) while <condition> loop3 [' l, O+ S- \( K" K8 [# B
<statement sequence1>;6 X! b8 \( |) c' i3 B7 S9 S# { y# Q
end;
2 j2 ? L, Z3 @' e (3) repeat
9 V. K. u* r6 _$ V <statement sequence1>;( S- n2 d0 w1 ]/ T' H
until <condition>;
0 X U4 q! {7 R (4) for <condition> to <condition> loop% F+ J, L4 J% w2 a
<statement sequence1>;
0 g8 U8 d7 D; K2 `! t- \ next;
4 |) _' I! G$ a, k. \4 |' U' U3 H( h3中断语句& k2 P! T7 Y! e4 M+ d9 y
waituntil <condition> prio <integer expression>;* `( U- ^0 O5 H
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以上为常用的函数！
2 g. J/ k5 e; [3 w还有很多，如有需要我把资料发到你邮箱里
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