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发表于 2012-11-13 08:48:12
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1判断语句
# W: ]+ W3 Z5 H+ ~9 h* O, E0 p* h if <condition> then
9 r+ X, u/ i/ m <statement sequence1>;# J: l8 L4 z7 }4 P+ q& u# j
elseif <condition> then) b$ i4 `0 B5 w/ S0 q
<statement sequence2>;
* d$ v" E7 J. S; s+ d else
4 y3 Q4 w- e/ q/ A# F$ s7 H <statement sequence3>;
`! U. [, V- q end;
6 I# |0 q, x+ ~: q* |7 S7 t如果分支比较多，用：
9 ]2 M1 s4 Y0 k9 n# J7 k! ` inspect <expression>
3 M2 {+ L# L% Z2 E+ B9 Q% l" S! S, K& L when <constant_list> then
) e+ H1 I7 ?2 f& V) B' O <statement sequence1>;* F) P$ s1 q) F5 I
when <constant_list> then5 R0 C2 |+ d* T. Y3 O1 I' q
<statement sequence2>;( G- Y$ { ^' O; d1 ?* g; |
...+ K& l/ n) R3 {
else' G6 W* @/ |& I% \. J" k5 [: |
<statement sequence3>;& R5 V8 X1 d" F+ ?' P
end;
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2循环语句( g! j( t) F r. T
(1) from <statement sequence1>
+ S- w% c Q6 z3 L until <condition> loop- U' ~" ?6 U. d* B. O8 s: n
<statement sequence2>;
! k! x, K7 H, V8 K5 K end;
! R7 f3 [$ R1 P) x# h) v (2) while <condition> loop
0 ?1 M. z* x' g9 X5 o. c' T <statement sequence1>;! [/ P, D* s9 O
end;
7 {7 I5 O6 N- E (3) repeat " ?4 T) E; s7 x4 {/ j$ t+ I
<statement sequence1>;
: J7 ?7 c ]" U until <condition>;
3 x' M4 r0 p4 [' b3 g (4) for <condition> to <condition> loop
3 ~" }5 a: ]2 _ <statement sequence1>;
# x, `4 u( c3 c0 P next;! n' e) g0 Z1 p ^6 I
3中断语句
8 \$ U, l c9 d$ } waituntil <condition> prio <integer expression>;
; t0 d; M1 U4 Y0 i, K, V! Z/ _6 j3 o: @, R
* z4 p1 M. p1 u9 U1 W' [+ ?: c以上为常用的函数！
3 K0 _' w. E: q$ n, Y P Y% `还有很多，如有需要我把资料发到你邮箱里 ( K4 O. q- f3 b( g8 b
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