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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! U( x0 z+ F5 r& b
if <condition> then
. X: U f7 L R$ O# O8 [' U9 U <statement sequence1>;
$ U9 F0 q& R+ V) A3 E7 p+ m& Y elseif <condition> then
: I4 y+ n Q/ e, I s$ K2 v <statement sequence2>;
& y) D) Q& ?8 w. @8 t else
6 [0 O$ U8 k) y* W <statement sequence3>;
- Q$ R, e6 {0 U2 W6 E9 C end;
7 H6 [- F4 D0 F* P3 C% k如果分支比较多，用：+ S# v, W% |! y5 _1 E9 @" u6 I5 c3 S
inspect <expression>
' |4 E; Q) G; G# j, h" \' E. E when <constant_list> then1 t3 c) x$ g+ Y6 @8 c) }
<statement sequence1>;
( D' ]$ x3 _* m! I9 x8 w: L9 \0 U when <constant_list> then
) j0 E- d+ R& ?6 F- Y( q. F6 i5 Z <statement sequence2>;
H+ C% G) ]3 R7 X3 }; j; e ...& ?8 D+ i6 D9 Z6 e! ]( r
else
5 x, _) o. o/ w: I6 _ <statement sequence3>;
9 W, W0 N4 O( Mend;
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2循环语句
( n' M4 p8 ~* @' w k (1) from <statement sequence1>
: W; D; b' k3 K; ^. D' H until <condition> loop
2 A" K/ [% [4 P7 Z0 j+ C <statement sequence2>;
' I4 N- H9 `" C4 r: d8 t end;; i! z* H9 Q2 h- s
(2) while <condition> loop; i- `1 e- ^: w+ L
<statement sequence1>;( R8 E9 N. Z, s( ~& t6 L) M4 |
end;
# z' Q0 A4 W2 f! X# o, v2 n; j (3) repeat 2 i' y8 ]: e2 G$ O: o3 W& L
<statement sequence1>;
3 R$ l4 i, U: b: q4 a6 o until <condition>;
/ m8 X1 m; h/ C: _6 \9 m (4) for <condition> to <condition> loop
9 d1 G. F, K' [. ^! ?; J <statement sequence1>;6 M1 I3 ?5 h/ l* O. c/ k; R
next;
' G* W5 H* A, k, ?% Z3中断语句
. i: T" G3 K F$ Q) ~+ c; l waituntil <condition> prio <integer expression>;) ^7 H+ ?( W& Q- f Q; o
) s: T' t- g+ D
* y7 V% `) q/ _: E% ~; o' r8 c* O以上为常用的函数！
, R2 o! T5 y9 W. Z2 S) f' N还有很多，如有需要我把资料发到你邮箱里 * Y; v1 ?! T# a4 @% T7 a' }/ u
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