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发表于 2012-11-13 08:48:12
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1判断语句
9 u4 Z+ {* i/ \: } if <condition> then" a% K6 X5 D4 T% x1 E
<statement sequence1>;7 E+ x, [' a* i2 D3 r1 L
elseif <condition> then
: _0 ^+ W" w( P) L' ] <statement sequence2>;& g/ Z9 M% C6 n! Q7 q
else & [2 B9 P% C4 x6 P& v" c5 o+ F4 B
<statement sequence3>;+ ? \3 L E& x5 k! J/ @5 A* k
end;
/ B; h& n/ I0 R( g, b如果分支比较多，用：# y! B: |; x* \$ u
inspect <expression>
" U5 V2 |4 t7 q+ N9 G, {# c when <constant_list> then9 w2 b% S" o1 u* l
<statement sequence1>;
% ?, n5 ~: q0 ^- g; P+ N% o& R when <constant_list> then; Q) q4 R3 ~+ c" J
<statement sequence2>;, S) \+ w9 P7 ]
...
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<statement sequence3>;
# v& k" _7 K/ U6 R8 N4 Fend;' _4 `1 t \0 s) g
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2循环语句
. O7 Z2 _, b( s (1) from <statement sequence1>
. J1 D7 G$ c1 n% { until <condition> loop8 u! f1 ^& }! S: i2 ^
<statement sequence2>;9 M6 w, S8 f; t4 b& R) T
end;
1 T8 v- v/ ?. e$ I- h9 b& F (2) while <condition> loop
3 {' i8 h' V! G$ y8 F: h5 u <statement sequence1>;
- z" |6 u3 P' @& q* A! }' x end;
8 |' p6 |5 U! c* n' K (3) repeat . z( O/ U6 y" E+ q4 {& `
<statement sequence1>;
& d5 \. I( E4 J Z' g until <condition>;
7 [1 c1 Z9 r- B* G, B- g (4) for <condition> to <condition> loop( m% v1 C6 i! _- B: D( V
<statement sequence1>;& z; g2 V6 Z) S r* l! i2 g, }
next;4 Z* \6 e- | z
3中断语句
0 Y. w. s8 t+ r waituntil <condition> prio <integer expression>;- C# |8 l$ H, t
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8 _% k( f( A! ^: ~以上为常用的函数！
8 y6 G6 _; R/ T还有很多，如有需要我把资料发到你邮箱里 * d. v. P: \$ C& j) k( o+ {" x
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