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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
+ w3 I4 Z$ ?2 ?/ O! A( h& A& E1 ` if <condition> then
3 a* B% {; @( k' Z3 ^# F <statement sequence1>;. ?. J7 D' f9 B0 q
elseif <condition> then& i% ~8 t3 q: m8 K* Q
<statement sequence2>;
8 G/ T4 N8 v7 z1 ?7 K else : ?4 G+ e2 P0 c3 X/ I
<statement sequence3>;: I2 r& h/ e. S- h1 A8 v* o
end;
/ I5 G1 j" N2 W) u. d如果分支比较多，用：
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when <constant_list> then: W7 ^. Q6 \+ q0 }1 F8 R7 u
<statement sequence1>;: ^$ j% f+ o* Q
when <constant_list> then$ t& V _7 E$ E- p
<statement sequence2>;" B( k3 ? j6 A8 x& \
...
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<statement sequence3>;) M; D$ Y# U! r( j4 r' g f
end;
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2循环语句3 J Y9 m8 [+ G6 x2 ^$ p
(1) from <statement sequence1>3 q5 u. a( S6 o% K/ ~
until <condition> loop8 Q2 x& f4 w4 G+ t7 i- y9 e+ w" O
<statement sequence2>;
0 T+ W4 y* i' B5 A end;. ]: R6 f! C/ o1 r3 `2 V! ^8 I
(2) while <condition> loop
' h8 ~2 d$ L; f% z. ? x' b: k <statement sequence1>;
' b2 M& `) O7 o end;7 N |5 I" m" n9 N. O4 u5 F' |3 Q
(3) repeat 2 i- D F8 F! _5 M) b6 z( g! O& W9 y
<statement sequence1>;' w3 t+ y. ]' T2 u0 |
until <condition>;
& p, v% G- l* @3 F: x! N: V (4) for <condition> to <condition> loop" B; }% U ~8 z( i" Q/ F b
<statement sequence1>;
3 w- t+ N5 w& l$ L: l next;$ m' P: Q: b7 d: w- m
3中断语句
; Y3 O: c: j ^$ i waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 |2 D# Q" V- {& j$ }, Q
还有很多，如有需要我把资料发到你邮箱里 ' ]7 z6 d7 a5 ?5 j, m5 x" @
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