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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
$ X) H/ S5 E" G, l! v- X if <condition> then
' g4 v4 p. c( A) u- o5 d5 h- | <statement sequence1>;
; S/ A8 t! y) f4 Z* j. T0 j; f elseif <condition> then+ Q3 _, J) h* K" |. k. o$ ]/ W
<statement sequence2>;, z: P9 _. ^ M+ G u: U y
else
4 K: A7 |4 \8 o2 b8 E4 N <statement sequence3>;3 f/ S) u5 N g2 j
end;
, i8 e) O( `' G- _' X. Z- d; ]0 I如果分支比较多，用：
7 ], ^( L0 M% P; T8 J2 f inspect <expression>" b9 n, `0 M( S$ n, `- L
when <constant_list> then( z+ V; c( T: t4 p) u- @$ ^ `
<statement sequence1>;
g5 a" G5 k" e* k when <constant_list> then" X: {" s/ e4 @1 ^* Y
<statement sequence2>;! h8 t7 B) i5 y# S7 y+ j! O
...
% _3 z( n9 G t+ {6 b else! k2 H' t) Z' n5 O* J
<statement sequence3>;9 y2 R5 G( O: K- L" |' U
end;- r( M Z; |8 S- k6 o
+ x7 E( y5 N- c
2循环语句
+ @' t2 X( Q; h (1) from <statement sequence1>
; Q: }1 j- Y6 y2 S m, T until <condition> loop
6 ?1 j! h4 v, f <statement sequence2>;+ J0 N2 p) D) P7 @! L% G1 p; h
end;
+ ]/ j! Z6 U8 s, @; z! x% B (2) while <condition> loop7 G/ h- x: z4 ~& t4 [2 z
<statement sequence1>;, k8 H, @2 B, E! T% h
end;
( U0 R! `% i5 g k (3) repeat % C; Z; P9 ]4 s0 X/ h
<statement sequence1>;+ k% E' W: k. X: q6 n+ x1 ^$ p4 _
until <condition>;1 E1 z; W7 p. A( ]% x; \, w
(4) for <condition> to <condition> loop
X1 x+ D% e% v/ q( ~/ u <statement sequence1>;+ O" G/ o* U$ `2 W# P8 r% f! O$ {
next;
6 T f, x5 {& q; D5 X+ T' ~3中断语句6 n# `4 V& H' K; F# X8 @- F- c
waituntil <condition> prio <integer expression>;; v# W9 m' ?/ g0 v+ K
6 `# J9 S# u. n% G W* S
% k/ f7 b0 n- O* }! |以上为常用的函数！+ u& C4 \0 d: @* D5 V3 ^& a
还有很多，如有需要我把资料发到你邮箱里
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