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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
# k# F$ D# b! r$ g1 Z4 I if <condition> then3 j2 b8 W) I& o6 i. |$ j
<statement sequence1>;3 ~) H! J9 g3 P3 `& Z& Z
elseif <condition> then5 n- ]5 w9 o% W$ g! f
<statement sequence2>;
' |# \* Y+ i/ l" i F8 c2 ?* o2 | else # a' p1 N, M9 u
<statement sequence3>;$ d7 J/ E/ J" S& G
end;5 c8 {" @5 S3 d3 \0 |. _7 E7 z7 W
如果分支比较多，用：9 W% q+ o7 b% J) p' \$ Q
inspect <expression>' h x2 [; k# D
when <constant_list> then# N& f9 k9 q# j# z) t# L, R7 g$ l; U
<statement sequence1>;
, K U, H2 H( y# u5 ]% U, f* t when <constant_list> then
3 V8 m8 _; B- e- Y <statement sequence2>;
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else
9 q0 s* `* ~6 B2 `- _7 g <statement sequence3>;
9 K7 c& e* g8 T' s- Yend;
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2循环语句
7 W% s9 G: \( h" ]% X. _: V; A (1) from <statement sequence1>
: r7 d: t1 I4 \0 o! l until <condition> loop
" D! E! ?' ^# ~- x7 k9 \ <statement sequence2>;
/ {& Z0 ~. W& U9 }+ e& \) v3 C end;: _, `4 t# X+ ~. u3 r
(2) while <condition> loop* v# O) o+ K* Q* z
<statement sequence1>;- y" y; I# r( T2 F+ m
end;) M5 U$ K4 s; w2 L# S+ g# K
(3) repeat
6 [: c d g: @ <statement sequence1>;9 D f4 Z( x! }7 Q9 P4 V9 Y4 M) {- e
until <condition>;
2 x$ ^ g/ C- l# C. n7 O' \. j (4) for <condition> to <condition> loop
% I+ R, U; g0 |9 r9 D2 ` <statement sequence1>;7 q {. i; D% k6 l& a- `
next;4 J& k: N- t9 `$ ?* \6 D3 U* w
3中断语句
8 Y1 ?& `6 ~: C: N) T waituntil <condition> prio <integer expression>;5 n+ r6 S5 m2 e4 s2 c7 r* [0 H% r
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. P1 o( K, W/ L) [8 R5 X O以上为常用的函数！
* a+ ?) \4 R; S8 Z" I" j还有很多，如有需要我把资料发到你邮箱里 ( R* f) S$ y: G2 D2 ^
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