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发表于 2012-11-13 08:48:12
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1判断语句 M7 b! t" U [
if <condition> then
8 o( u" p, l5 c8 X$ ]0 T, M <statement sequence1>;
1 C0 _/ U4 C/ L) [ elseif <condition> then
6 n# U0 M; z8 H! q' ?0 f <statement sequence2>;
0 T2 B3 R( B( k `+ |6 Y: w- ]6 K else
9 d" X% }7 r$ g) o3 J <statement sequence3>;
$ {; z9 C' i4 h6 N9 @& W; [ end;
% p2 G4 @- y# x' Z% A6 a- c! F2 u/ T如果分支比较多，用：
]2 c# h8 \# N( T e$ d Y) p3 b4 R* ~ inspect <expression>- Z1 M: s2 I9 y% W; H9 q
when <constant_list> then
( u0 K5 ]+ o$ n; V: j+ T, C <statement sequence1>;
0 D; s$ S1 D' X8 L9 j& e4 ^ when <constant_list> then
: r% G5 u9 a' g) v; s; W4 Z S <statement sequence2>;2 E/ D W7 \* |! @
...
; o2 o" [4 m" j else
5 f n/ j0 q! c0 ^4 ?2 x# j1 v1 f <statement sequence3>;) g0 g( Z0 ^. R) L U v
end;, X& w, E2 o5 R0 A" o, w) T
) p" E% N% K/ q3 \+ |. B2循环语句
, D, v% N5 N! Z6 L7 o: D2 _6 ?4 J (1) from <statement sequence1>8 H8 N- J& W4 t3 B, i5 [1 U
until <condition> loop
& T+ l( C: b8 o9 W <statement sequence2>;
- N/ J( ~; V' r [ _ end;4 M) q5 i/ z, \/ `
(2) while <condition> loop' L+ _) w1 H; k$ K4 O* z# P/ c
<statement sequence1>;$ I! T9 N1 ]* N$ V3 D# P; ~
end;; A, n- w- n# J
(3) repeat " e) Y* L4 H# V, |1 |% M
<statement sequence1>;
h2 |/ ?+ [$ y until <condition>;
0 C }& J. l/ } w (4) for <condition> to <condition> loop
# H" g$ o5 d# b+ a <statement sequence1>;: B' f- U, _. b3 B
next;, f3 q. b+ F" ]* U
3中断语句
! ]4 z1 F6 Z' H waituntil <condition> prio <integer expression>;( y) o3 V) |3 @1 F/ ^, o3 y
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# ?! J! B( W: l
以上为常用的函数！
" l8 E7 i) l2 T r0 M4 ]2 ]/ d还有很多，如有需要我把资料发到你邮箱里 8 {, E% w& _7 i+ b- I3 Y7 m; r
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