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发表于 2012-11-13 08:48:12
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1判断语句: k) d" t* ^, E& F
if <condition> then
' p, j) z; M, |1 C <statement sequence1>;. w& z: }- g! J+ Q# B
elseif <condition> then
! y" \. r: o" I9 w0 |5 d3 B6 [ <statement sequence2>;1 S" _8 s! q, U5 _$ @- e& u6 }
else 2 O- w, m# q+ ^, A5 s8 @! e
<statement sequence3>;
) c3 Q1 q) p8 J" z, h: S9 f end;! J+ c6 o3 H$ U. c2 A% y5 p+ K
如果分支比较多，用：
1 l/ p! x' V+ t3 `, H' g inspect <expression>. K/ K% M6 z$ j7 i) @1 W K
when <constant_list> then+ m! U; m3 Y$ ~2 ?! ^9 S% F ]
<statement sequence1>;4 @, Q$ _+ l/ Y7 A# l0 I5 e
when <constant_list> then
8 M J; [* ?, N# G' o <statement sequence2>;7 j2 e* p% U: ^( h* o7 j
...
: P# {8 H o. y else
; e/ l) C, a; h- d2 O# } <statement sequence3>;+ S8 N' w) _ z3 K; s/ l/ a2 E
end;3 X. V* R& i1 }7 B7 x) Z8 Z
4 z- ?. g' p1 j. j4 V2循环语句
% _7 S* U4 p9 b- v (1) from <statement sequence1>
4 U) _2 A$ e" x% n until <condition> loop
, O( u: {4 @3 H8 [8 [) n0 P <statement sequence2>;
2 t6 }' f5 W9 q end;
8 u: n8 N1 ~ U" v# c5 f5 S2 G (2) while <condition> loop
9 ]2 m9 L @& ]9 H <statement sequence1>;9 }( p+ S% s- N% P, R3 Z( C
end;
4 }4 k" ?% |; V" \7 P' X (3) repeat
: w' j; y* g! n7 n' ? q6 E! W3 m2 m <statement sequence1>;2 B( M- t; @; P. v/ W
until <condition>;
( f2 L1 C" e; I3 s. m (4) for <condition> to <condition> loop
+ B* K" q1 Y9 j3 D+ b; K3 p <statement sequence1>;
2 w- Z+ e6 Z& h9 n- g# ~6 ^ E next;
4 B& @& d% E1 L6 |3中断语句
0 a) K: i9 v$ u4 u waituntil <condition> prio <integer expression>;
3 h: F% W Y1 m+ ~1 P# V: ^! P
. p z2 @4 Y7 }) A( A
# |, `/ a+ x5 o6 D以上为常用的函数！5 O; p4 G9 X q1 G2 q/ f
还有很多，如有需要我把资料发到你邮箱里 6 H: }2 }- e. c3 @# R
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