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发表于 2012-11-13 08:48:12
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1判断语句 R8 B+ X6 F8 I/ f2 K6 m0 T; V
if <condition> then
" X- ^ z: \+ Z <statement sequence1>;
: G: C3 ~, u3 u6 X9 L, q elseif <condition> then7 h) A) z; ]- t2 S- _ m8 {
<statement sequence2>;4 R/ _$ Y: ` i3 S8 }. w- m
else . x3 u* }1 ]: {1 ]" D- N W; n
<statement sequence3>;
! J' u) z, J9 r' q. D: U1 a end;
* g9 V! u0 q# R1 v如果分支比较多，用：
' R& y! t3 @# A' B, h, k y" M/ W inspect <expression>
; E) K3 Z# e2 ?7 E8 N# o when <constant_list> then+ d8 I( p( v" D: A d
<statement sequence1>;& O# W$ p' |' |1 x5 q+ S0 Q4 l7 }
when <constant_list> then: S# {3 U. I- w; z6 T" b4 @
<statement sequence2>;
R7 W/ F( O( L5 ? ...+ K" |' Q2 P& T& X' W
else1 g2 |& W: q! B: C7 m: k
<statement sequence3>;
* P) M5 T& D2 @4 h M- Oend;
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2循环语句3 A) q% D) I: _
(1) from <statement sequence1>: p! K: E! @9 X* Y y+ e
until <condition> loop
$ I- N/ A7 [ b( e6 X1 J <statement sequence2>;
2 x, u2 w F7 y end;; L! t1 n$ c5 @
(2) while <condition> loop
5 e4 b& b$ a8 \ <statement sequence1>;
' B; p) y3 p' ?: l, X: ^( j: F end;! h: {3 X3 Q5 s( [7 i U- ^
(3) repeat
+ N% I) x, g: u6 G' { <statement sequence1>;& l4 n5 H2 r: N. {( w: Y; {4 {
until <condition>;
1 R; a( t- L+ z) k8 E (4) for <condition> to <condition> loop8 g9 G1 k+ i, y4 P
<statement sequence1>;
0 t7 b+ {4 s0 H/ r' ?7 C next;
0 |2 b1 p! G3 \1 P1 \/ H3中断语句9 q# u$ |7 e8 P2 f$ g
waituntil <condition> prio <integer expression>;
% j3 I# \, r+ s/ ~" s$ r! J0 |, g0 q6 D
" w1 W7 N3 t& L以上为常用的函数！
4 ~5 {5 }5 `7 _" R8 M' `还有很多，如有需要我把资料发到你邮箱里
* J: g4 s/ F) @- [+ u# v1 O d( W7 H2 |( s! i! i
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