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发表于 2012-11-13 08:48:12
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1判断语句
: T( \8 ^+ u/ R4 V if <condition> then5 k# k n- {: e" k
<statement sequence1>;
3 {* H& n% B1 J0 u, s8 F$ K) | elseif <condition> then
, h( \9 e) q- ^$ Q <statement sequence2>;( f1 H; Z$ _' h8 Z. s6 t; X
else
+ b$ ^2 t3 h7 f <statement sequence3>;
: Q+ i ^, l3 C1 @' M end;; {4 r, ]0 h, `* o
如果分支比较多，用：
" d) s- M' ?* r inspect <expression>
0 R- R- j0 k# X6 Q; F3 v when <constant_list> then
0 Q' x0 O; [7 `/ N" W4 T" B/ X% m <statement sequence1>;
' H+ v* z' ^/ G6 t% }# r5 ] when <constant_list> then0 o! U& J( x/ X" ^$ G; e
<statement sequence2>;" {3 G9 j6 H6 R2 u; b
...
; o, W$ @6 j3 K' N( ^4 Q" p$ d else/ I# A7 N% E3 g: Y$ K: Q* f: u7 J
<statement sequence3>;
' X0 r8 O# U2 ^) i1 N; \' pend;7 {6 k: G2 ^3 G+ e; e9 S
% \+ ~# r% w; K! R5 c2循环语句
# I- f# F' ` s% {" x$ S (1) from <statement sequence1>
" ~# _% C0 J) A( |9 S until <condition> loop. @& B2 B( j! u( f- W3 K+ y
<statement sequence2>;
6 e6 C- l6 q9 O% o. U end;1 l8 u4 R c- _0 G3 Q0 w0 Z8 {
(2) while <condition> loop
2 w, v# h% Z9 d: m; b <statement sequence1>; g n9 r, c' q/ \! H. X% r
end;
X- @* n: x( |8 {" P* s# b (3) repeat
* z! J7 W& }, N) G/ Z w( T& v7 r <statement sequence1>;
: o* G$ v3 @0 | until <condition>;
4 e. @0 i \: c (4) for <condition> to <condition> loop
( o; H" G2 |2 p" D. Q9 @7 Q5 R. K <statement sequence1>;2 Z9 B+ ]& t8 C2 H1 C' j- O
next;9 n$ Y+ E ^: O
3中断语句0 Z3 [& j6 B' h; V
waituntil <condition> prio <integer expression>;8 _% P6 a% Q7 ~6 G& K1 L
" p, e6 p, w3 O; L! p% {
/ l. Z5 a: X j/ v: W7 k6 l以上为常用的函数！
; x& g- Y9 G! r& }7 t% [还有很多，如有需要我把资料发到你邮箱里 ; H# }& \& b9 w" k0 k3 ]: s
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