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发表于 2012-11-13 08:48:12
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1判断语句' Y( [9 r% }6 V# Y, h
if <condition> then. r0 t6 S s& L* x; A I7 d
<statement sequence1>;
# f2 Y% n' ?5 i. n v& X elseif <condition> then! f1 j3 J! h, a* W6 |2 A
<statement sequence2>;4 F& p j) A3 t5 f
else " h/ [6 r2 d( J' C0 \: w0 V/ f
<statement sequence3>;
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如果分支比较多，用：
) }, }. J* k/ k) x# l, p inspect <expression>6 U, `4 p) [3 w* g
when <constant_list> then
9 Y- L1 H4 P* G6 U" Y- w <statement sequence1>;2 v K" A! O) n( E* Y
when <constant_list> then
9 l) K- } E3 j3 U2 V3 | <statement sequence2>;) Z) m% `8 Z- x% c2 z* D0 {8 z
...
. o9 o' _( X+ G! j5 D% ?7 c" n! @% b else
( F; O0 F* t6 u <statement sequence3>;
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* Z* t0 u9 G% ]; g2循环语句) {6 f4 m* k+ t( H0 X/ ~
(1) from <statement sequence1>4 ?0 I$ N; i% K1 o8 g2 H2 ?
until <condition> loop" a6 T. c6 u2 d, B b
<statement sequence2>;, X6 M4 K+ T0 f
end;' D t# I+ i4 Z |) Y$ b
(2) while <condition> loop
. b: ?+ D3 J* m# c1 ~5 U1 p <statement sequence1>;& Y% B" D' d. U- j% z
end;9 ]$ c- j" j7 N$ v8 z, V- ?9 i
(3) repeat
) p K5 g9 N2 H& E/ z7 {! ~$ K <statement sequence1>;
3 w, I# {# P& d* _7 V5 b9 k0 R+ I until <condition>;# q4 C; t/ c0 `: B0 ~# Q# d
(4) for <condition> to <condition> loop1 ^8 N+ k- K' N F5 q! `& g9 ~
<statement sequence1>;
0 N% O$ t0 {, b) P2 ] next;
+ x! [( t% l0 }" n7 P3中断语句3 p3 R8 |) }: z* c1 \9 G1 a! u
waituntil <condition> prio <integer expression>;
+ C: p6 e' }0 C1 p4 T1 n! c$ }6 ?( x3 P& ~! g% z d* u+ `
; e- J: v" x& H4 J2 T% ] z以上为常用的函数！
& j+ M7 O/ o8 ]还有很多，如有需要我把资料发到你邮箱里 + }. I8 w: M$ r6 p, d( r
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