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发表于 2012-11-13 08:48:12
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1判断语句
& I: @, g- {' u I& r6 P" o* U1 p if <condition> then( e6 Z6 i5 v- t H
<statement sequence1>;
: E4 D" J: f" C) S* z elseif <condition> then
0 {9 |! j8 j+ m0 e4 [0 }, N; M <statement sequence2>;( N! C6 F: m: N
else 6 S7 N, [& V$ D3 e4 g. ?# K
<statement sequence3>;
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如果分支比较多，用：
, U- F7 @! t' }+ m; J- }3 _ inspect <expression>
* k4 C/ ]6 [ x+ u2 M8 u5 @ when <constant_list> then
) s4 \ a% Q; H) a3 W) X/ } <statement sequence1>;
; B5 q: S% g4 Y# Q when <constant_list> then
+ k5 }1 n+ X/ Z7 s) @$ d# v- {5 r <statement sequence2>;9 K) T9 p# W: v; o F
...$ d) e/ G7 d4 j5 h- X% x+ S
else2 q- U; X8 K" B% @& ^
<statement sequence3>;) L2 u/ X$ s/ Q
end;0 z! P; T* k' n% D& ?
# g( a% p, M( X/ C# o* L2循环语句% |* U0 k7 P( C1 E2 x
(1) from <statement sequence1>. b* a# H- N( u5 J- j
until <condition> loop( d( a2 ^: K3 C; k( h
<statement sequence2>;" A( T r- @4 \ @- ]' A9 U" n3 C; R
end;
) C9 j5 ^6 i7 y7 t; i4 L (2) while <condition> loop
' g# p' k) T" c <statement sequence1>;
, T! V6 S2 |8 s9 ` n4 V3 y end;
0 n. o2 N. D: H" I (3) repeat - H2 o' F! ~3 }% O, |- H2 x6 Q% R8 O9 @$ w
<statement sequence1>;! H' q. f# F5 V- a$ A8 x
until <condition>;
2 G& Z2 Y4 a* z& X/ r) E (4) for <condition> to <condition> loop' y+ H: |' |+ L6 |& Z( r
<statement sequence1>;
) a6 {' {/ S7 S( P9 g next;# m) M3 `8 [" K4 z3 B
3中断语句0 d! ~, X7 z0 z3 N# O" X
waituntil <condition> prio <integer expression>;
; p- I( z8 M7 w% }& N: F' U2 S* Z7 |: j+ r9 e1 ^
4 }# p8 i. g k* K _+ X8 m以上为常用的函数！3 k& g, C' f4 Y" e% B- A: I
还有很多，如有需要我把资料发到你邮箱里 , t+ J) [7 \' V2 r7 T2 J: R2 W
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