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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
: @3 J5 ?$ _$ N, z: I if <condition> then4 x# Q( {: c3 W8 I" e2 F$ E- ]
<statement sequence1>;, e( \% [; a1 ~7 o# P1 O( _
elseif <condition> then8 q; z, J, \: d! ^: a
<statement sequence2>;! Q! y+ u+ l# u. Y8 ~& c
else
0 O2 Q- t: h; n/ T, k8 Q% } <statement sequence3>;
8 {/ I# T3 J* p, U$ I; V% q2 ~ end;
# R: K. N3 l: Q如果分支比较多，用：
& A: e( R& y& }4 x) ] inspect <expression>7 A* r5 [) n* K; t
when <constant_list> then
( X- | L `1 [3 N <statement sequence1>;8 d3 F3 ^$ H. _# E; _
when <constant_list> then/ c2 z2 |4 W& w* |) H
<statement sequence2>;
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else; X' c7 p1 D+ j9 q: P
<statement sequence3>;: R8 z0 |9 D3 s
end;" v" g6 x( U7 B2 @$ X, k
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2循环语句
; E; d" R" F- B& e( W1 C; Y' C (1) from <statement sequence1>; I8 {* F$ U( A* m. `; J% A
until <condition> loop
" A B) g$ T5 ?( v1 |* _ <statement sequence2>;
( s' _) z# `, @, [8 i' V. K4 n end;& U. @6 B5 ?: x0 \' Q7 S8 b
(2) while <condition> loop2 g- v: x9 m& w3 L& ^7 \
<statement sequence1>;' I& _2 N' L0 G7 x( R
end;* D+ L- o% g# P* X3 n. k
(3) repeat H6 p9 ?) x# ]7 [* d
<statement sequence1>;
]/ x. {. o/ |. Z% V' r2 g until <condition>;
6 R$ y. F8 A5 v$ R% J: | (4) for <condition> to <condition> loop
1 |2 P6 C$ g" Y4 s5 ?7 s; X <statement sequence1>;
2 Y" }; I( k5 [0 ^4 j3 S5 d6 H2 G next;& T! T# g2 ~' z/ t! r' C
3中断语句: [: t9 P. S4 O3 z( k% S) [
waituntil <condition> prio <integer expression>;
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以上为常用的函数！; X/ O3 I/ k; c) u
还有很多，如有需要我把资料发到你邮箱里 : W! H0 y+ q. m- u; A7 k$ T
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