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发表于 2012-11-13 08:48:12
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1判断语句
9 q- E1 g1 q* e0 | if <condition> then0 W0 Y. D) A! F+ L2 N9 `6 m) T! z5 R
<statement sequence1>;
% {6 G/ i% B; w9 _ elseif <condition> then
3 p0 Q+ s$ Q1 F. @6 q <statement sequence2>;' F$ H% @/ R: c+ X
else
8 C& K6 ~" o0 E2 I0 G <statement sequence3>;
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如果分支比较多，用：4 ~! m. f; L/ \7 f! R; L
inspect <expression>' ^* A2 C ?5 q- b: Y
when <constant_list> then
1 k5 u3 d* _, l2 j <statement sequence1>;$ r* m; r4 F2 Y: B
when <constant_list> then
9 ^ D: r1 T; N$ V% [ <statement sequence2>;0 y( Y) k% }5 r. I- {; d: p- N& i9 O
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else& L: ]3 F2 S' p. A7 \* T9 u
<statement sequence3>;
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8 S+ j. C8 L9 t+ q2循环语句
0 `' D! M- q4 ]* b" T (1) from <statement sequence1>/ c' l% x" a3 q
until <condition> loop
% N- @ T/ m1 k9 W <statement sequence2>;) F! s2 d; j% m- v$ D1 D! n
end; ]4 \% n* a0 ?0 ] w: i
(2) while <condition> loop- n9 c. x4 P" b5 M+ G. I
<statement sequence1>; q: N& k9 Z- n, i3 G9 |, u$ [& Z
end;
# h& O& j) O# \9 w (3) repeat . s: \" {! \. X( ] c! K! |+ u
<statement sequence1>;
( X- ^6 T: F `" L# t- ~ until <condition>;/ K7 H# x! m2 n6 ~0 y, O$ u
(4) for <condition> to <condition> loop( X6 _6 I+ q0 y! i4 Y; J9 b& U
<statement sequence1>;% }. l: N! ?7 s6 j1 [' }
next;
h ^7 f: f d' j0 }6 z q; e: M3中断语句0 S1 a" m% M* p& ~) `1 ^
waituntil <condition> prio <integer expression>;8 {8 {' _5 l# P6 P# r& E
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! g$ G8 P( p; Z& U2 t; n以上为常用的函数！
5 O- R5 n2 O) ?# _6 M) h还有很多，如有需要我把资料发到你邮箱里
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