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发表于 2012-11-13 08:48:12
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1判断语句
1 g4 \5 w' U, x3 e4 P5 X+ U$ ] if <condition> then R4 G, t& J1 L" e; B
<statement sequence1>;& v( U# S/ S0 w
elseif <condition> then
/ k3 z6 W) t0 L' N! E$ B; j <statement sequence2>;/ ]9 Z! p6 o: G/ u z
else
6 _% g: b1 a& v$ E7 k <statement sequence3>;
6 h" x, P8 j- _: v- H$ b( k' J end;
1 B" ]% N0 J: _: e' y N如果分支比较多，用：
/ E6 y4 C, J- d' w, M; ~7 y' R inspect <expression>
! N2 [9 B% k, r when <constant_list> then
7 P1 F+ L' Q2 c2 h <statement sequence1>;5 G/ [# U! O# N; E# y- F) F
when <constant_list> then5 R! m2 r3 l" H9 n- s
<statement sequence2>;: Y0 w/ Q4 C8 b7 a" V
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else9 W5 u9 Y2 f9 K& X* [$ p3 a
<statement sequence3>;( O4 D' L7 H" N) E& h% K8 o; M" Z- L
end;" P. h; A4 R3 P' M
- o8 D! e# I F# [' h+ r, k; s2循环语句' X# j- D8 a( A7 p/ C; R+ j1 x
(1) from <statement sequence1>. ^/ p6 Y$ f; q) \' {% W* _
until <condition> loop
* w+ G: ^9 m1 g2 V* E9 K2 V <statement sequence2>;
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(2) while <condition> loop
3 r! c% O' O2 E( S& g4 X" r <statement sequence1>;" i5 |& ~5 H9 j8 ~# y# O* H
end;
# l7 E# Q; {! Z, s" F6 Y (3) repeat
$ ]- v0 K9 l$ v$ z# ]/ ?8 ~ <statement sequence1>;7 U/ i8 f; f. `' ~0 V: T4 |
until <condition>;
" ?8 }0 d0 t/ m+ J' V. N (4) for <condition> to <condition> loop
# i+ P* a3 E) p3 E Z <statement sequence1>;
) _) |% i8 s9 S4 X% h1 O# n6 { next;, ]" I6 n' ~1 K
3中断语句
1 q. Q6 ?0 b" |; f# z% \ waituntil <condition> prio <integer expression>;: Z% ^1 K$ R* g; J& E
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$ x# E( W+ _7 Q! N4 {0 \! v以上为常用的函数！# }( ~7 p& l( b6 _3 t" c
还有很多，如有需要我把资料发到你邮箱里 8 z7 r) j" T. S. u R8 K
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