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发表于 2012-11-13 08:48:12
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1判断语句
1 }; Y4 p- a, x" H6 c: v; K if <condition> then
1 F7 C5 P: v0 p1 Q4 t* c <statement sequence1>;; Q# S. H6 q2 b: i/ g2 B6 W+ R
elseif <condition> then
+ Y3 S/ _! K" P: m2 l# U1 R3 q <statement sequence2>;
M. I' s8 U9 x, `% M. M else " K# `$ A2 l. |3 L% y
<statement sequence3>;. v x Q) `8 X0 p" i9 \8 J9 @
end;! l9 J1 n: c. L c' S" u, D: c) {
如果分支比较多，用：
8 i& F9 a) o( |% V/ x7 c# I# l0 X; k inspect <expression>
" A! ?1 [" i/ @5 x9 b when <constant_list> then
# m% M5 B- s6 U; J# C: w/ N <statement sequence1>;
" b, J, x) y1 Q/ c: d when <constant_list> then
: t- E \0 k1 z" @9 f <statement sequence2>;- m: W" q; E3 I& L2 b5 N
...$ v- T+ p5 }7 W% m3 E
else
I5 R# E' e F9 L" R <statement sequence3>;
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d& U1 h) w+ b0 T+ [6 I2循环语句. L. e- D `1 J
(1) from <statement sequence1>
' h { I: ]: I9 t4 S until <condition> loop( O/ [) S+ I3 Y- F! x o6 @9 O
<statement sequence2>;
: K$ ]% k6 p& [( M. j end;
! P [+ B3 c0 z4 G2 N4 ] (2) while <condition> loop" H" W# X) }7 E3 K( Y
<statement sequence1>;2 Q/ V' |9 `1 m# o. `, U5 {
end;+ K, a M0 G) a
(3) repeat
" A9 u0 @- T; V0 t <statement sequence1>;, ^ a' Z v2 U9 j2 X
until <condition>;. ]3 V/ w4 C: k$ _8 P* Z& W9 ]
(4) for <condition> to <condition> loop P9 K, e3 d( ]- e/ ~- L
<statement sequence1>;# p, h% Y4 i' b. Q0 ^/ k" o& i6 I5 l
next;
! L: z: v8 e: y1 W( y' W' v3中断语句
2 I% _0 w+ p8 W8 \( q4 k waituntil <condition> prio <integer expression>;1 e! [) d" b) ~4 s7 [' ^
6 G5 A% P! b* I8 Z
) a; A: W7 h+ |0 y: n( m/ a以上为常用的函数！
+ h6 ~1 K/ h, y0 _9 O4 o还有很多，如有需要我把资料发到你邮箱里 8 v' ^0 b9 `4 x" N3 s
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: H3 {% V' h% y. m$ H( v L% O, s2 c a
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