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发表于 2012-11-13 08:48:12
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1判断语句0 I ]' ?( a' d' W9 S5 [: ]
if <condition> then
5 D* H3 L7 P5 x0 J4 m <statement sequence1>;
' F O* c1 ~5 x/ t- P elseif <condition> then
0 m4 T4 w3 r5 A B% ]$ m <statement sequence2>;
# q2 m" J; Q7 O e; u else
# x* \7 H1 L. B; D. G1 } <statement sequence3>;
9 r# F$ h, v* p5 `. x! i) z' Q end;0 M) O3 `4 F/ T" u9 W& x' @- Y
如果分支比较多，用：; b% ^6 g7 J: y2 D% w" `) |5 [$ l5 A
inspect <expression>2 Y& R2 ?6 T& p, @; G
when <constant_list> then
# c) u8 F E, T' `( q; A <statement sequence1>;
0 A( l7 A: B3 j when <constant_list> then% A) E/ P7 E8 ^# v( _" d) O2 Y
<statement sequence2>;8 z! h4 W# m; t: @5 }' K
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else+ N! H! q# W8 Y- L g
<statement sequence3>;
2 x; f, g2 A2 u, r9 nend;
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8 g# s, X3 d3 g# R% d6 J/ _2循环语句& U+ i. M3 ~, {! l
(1) from <statement sequence1># s- S% |8 C' s1 r/ S/ O
until <condition> loop
: G7 ~3 o5 G7 Q% ^1 g; D, S7 P <statement sequence2>;
( G: [: O/ P- t! k$ ^6 F end;
2 B1 e9 E* m7 D. @# f; l0 f4 M0 V (2) while <condition> loop& B8 E6 _2 I0 [( O4 X$ y
<statement sequence1>;
0 G2 d9 {5 d' O1 Y; s end;7 D8 k& O; g" ]* _
(3) repeat % v6 j6 c# _- {, N& C, V' s4 D8 p
<statement sequence1>;$ _# u6 N6 @3 ~. |
until <condition>;) p) k: A& q; }/ c; S7 [9 o5 z5 M) `
(4) for <condition> to <condition> loop
1 A/ {7 ?" }9 Y) Q7 T <statement sequence1>;& S5 m7 C5 v2 f; p: Q1 \' y( t
next;; y. H4 b7 l0 m, u8 W- i
3中断语句
! Y8 }4 M* ]5 f% I( c waituntil <condition> prio <integer expression>;7 \/ r8 A! e; x$ z4 `( S
% r1 ~9 d5 J2 d" c& Y
0 s1 E: o) _* X* U% r以上为常用的函数！
! R6 T5 X/ v4 w/ v还有很多，如有需要我把资料发到你邮箱里 ' I* B' w1 H+ }# f
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