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发表于 2012-11-13 08:48:12
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1判断语句
9 r9 M6 K. T- Y1 o7 K2 c+ T( l d if <condition> then
9 r; J0 w4 j2 \6 j: Q <statement sequence1>;
) g4 l* ], u7 A- l0 s6 ` elseif <condition> then
$ [- D9 _1 ?- o, _5 M( l, f# { <statement sequence2>;
+ X+ o0 S# g1 R$ t* j9 g else # G+ R9 S3 L0 q' ~ r3 \2 f
<statement sequence3>;% A4 u9 O7 }5 J1 j2 e
end;7 H5 i& x( L1 G
如果分支比较多，用：
# Y1 u# G& _; c inspect <expression>
$ i6 A4 S. j. v$ f$ A- ] when <constant_list> then$ Z% q* E2 X, X" m; T2 Y6 o
<statement sequence1>;
& _! b# s. F% F7 k* y when <constant_list> then+ a2 c4 i3 L4 y6 \, |# g, s
<statement sequence2>;. R2 V2 q B3 H' A
...! U2 b& @2 T" |, i2 ^( }+ `0 b6 o' h
else8 G5 O: M' ~, c
<statement sequence3>;" w- Z$ {& Q4 D
end;
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2循环语句& T6 a* I" s1 l3 m& A
(1) from <statement sequence1>/ Z- T6 d U9 w
until <condition> loop
: X% T1 m8 B# r <statement sequence2>;
5 C- y2 o0 ^; b8 c: c& d: M end;
% O9 B# B; o$ f/ y2 k (2) while <condition> loop
6 o8 m" K: c: @. _9 H <statement sequence1>;7 T3 i# r# T h4 I+ B# Z; s8 t
end;! d9 G- N, f" O& G- S
(3) repeat
4 k* P- e$ w! F# d <statement sequence1>;
6 L. b6 s% @. z, ^# u y& F until <condition>;
) |3 R! V7 S, o5 [0 S) L) i% x (4) for <condition> to <condition> loop- d" t- |0 B$ A' j( t9 a
<statement sequence1>;/ ?# b: m; X: C( o
next;; P, e5 Z+ M/ k$ g# a, I# [
3中断语句
2 [. f; e4 m+ ?& f; u waituntil <condition> prio <integer expression>;) l" z) u7 t# _6 K1 Y$ K
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4 [+ ?( X* |( e2 D+ c
以上为常用的函数！7 z e! U; Q- x' ~
还有很多，如有需要我把资料发到你邮箱里 , ~# z$ n# x$ M- E5 ]% S$ u8 v5 l
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