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发表于 2012-11-13 08:48:12
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1判断语句4 a. b& P9 G2 L) a4 _; S5 H. n! k
if <condition> then
7 k3 ]8 D1 O5 j9 o, V7 B; ?! i <statement sequence1>;* `$ {+ n" O* I) f$ d1 R% h# d
elseif <condition> then
$ m7 h/ @/ _4 E <statement sequence2>;9 @. k% u; ?$ _; o( T
else
9 w% K3 L: @5 _ e <statement sequence3>;
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如果分支比较多，用：/ G2 K V6 B! C
inspect <expression>4 o( U2 X P8 O) d. O
when <constant_list> then# B7 j B1 o: \- u9 F- C
<statement sequence1>;9 f& H8 ?% Z5 X/ J6 o: c! d
when <constant_list> then
) }; y& ~7 h" F1 m! D <statement sequence2>;
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else* Q$ {9 t1 j e4 a8 K( S# z, E
<statement sequence3>;5 I0 j% v, Y1 P: _
end;
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" a3 e8 ^& G7 o2循环语句
3 J h; R1 r6 o& Q% @) k9 ? (1) from <statement sequence1>* J/ A( ~1 K: C$ s% K4 l
until <condition> loop
' g5 m& ~& @+ A. `3 x6 E$ o <statement sequence2>;5 q) c y- K( R5 O& D
end;
4 u, M6 G" \6 u0 z5 \$ E9 N3 ]4 Y+ d (2) while <condition> loop
' E4 Y8 G1 y. Q% n- L" c8 i <statement sequence1>;
; s0 {# f+ E+ R: D+ ] end;. O; p( K0 v* I* P& [ }1 p
(3) repeat
/ s2 c( t) a4 f0 a& e <statement sequence1>;
' x5 \( i. F3 ~* ]' @) Z( Y) q" L until <condition>;" p+ @3 N k) ?, G0 n& b, K
(4) for <condition> to <condition> loop
; N" H j( J( u2 @) i% Z3 a <statement sequence1>;3 m" q+ g, m6 k. |0 Y: ^4 y
next;
; ^$ ?4 X- x; x3中断语句# U- _5 ^) k5 u6 Y7 U
waituntil <condition> prio <integer expression>;. a" e$ w. i: n
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以上为常用的函数！
: A. A# [5 q6 o6 \ W) o还有很多，如有需要我把资料发到你邮箱里 8 x/ g: g2 g4 G Q( c* H( o, T
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