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发表于 2012-11-13 08:48:12
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1判断语句
6 D0 p2 ~% T9 w% y* v7 p if <condition> then
! B. m( Z) ]& S! \: Q7 d <statement sequence1>;
1 v( ]- u0 J9 N% h9 h elseif <condition> then
- s- i3 A: X- T7 a8 z9 L* n+ \ <statement sequence2>;/ T3 y: F/ Q3 e8 [3 }
else 9 H- z9 A) [4 Y; A5 h
<statement sequence3>;
2 A2 I% b7 I- z: J end;& B B3 O3 i5 s( L# r+ t9 ?8 n
如果分支比较多，用：
1 ]4 f# a" S% Z2 s/ q& M5 s inspect <expression>
" ]% P V& ^ K3 E" I% o when <constant_list> then( ]5 a } A2 j6 v% }
<statement sequence1>;, ~" i; J- |4 b# ?4 ]
when <constant_list> then
9 m7 H1 r3 u8 p- g <statement sequence2>;
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else$ @# T# n) U1 N$ n9 a
<statement sequence3>;/ Z" H& O1 r" S5 A# W" j) V% b1 `; s
end;- m3 R3 z; v: C1 e
/ Z3 f0 f; F# K2循环语句
% e% Q+ R0 k7 E4 N! m6 a+ L (1) from <statement sequence1> ]1 ]3 E2 }+ L) X0 P1 Q
until <condition> loop
' ~- [( Q6 o z4 C$ _, s! l <statement sequence2>;0 _3 {3 [+ L5 @: L% I: K( J
end;" p5 Q$ d8 n/ m
(2) while <condition> loop' B9 L# {* t+ `0 m. H1 O
<statement sequence1>;& ?! l* G# Q3 p
end;
v* \' ]- _% u, X) n. g (3) repeat
( ]/ s7 L3 q5 E7 X <statement sequence1>;
& _) ]7 \' N) D until <condition>;# F! g- v; p6 Y& Q# d, L H
(4) for <condition> to <condition> loop
8 l& P( i; F' [$ s <statement sequence1>;* n6 @5 h' y: z; a. u* G
next;
8 X- O# g' L) [( @3中断语句# N" m, X! Y# L6 C7 Y' C! ]" W
waituntil <condition> prio <integer expression>;) m3 R8 L1 w' v- A! h1 |! m$ c" o4 [
$ g5 J4 n( @& M5 ?$ D
# s, a5 Q/ r2 I以上为常用的函数！/ \$ B! G* I% v* v+ \
还有很多，如有需要我把资料发到你邮箱里 6 z+ ^/ z7 K4 \# g
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