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发表于 2012-11-13 08:48:12
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1判断语句# |. S1 J. P* Y% B' A0 w4 B
if <condition> then+ S3 {6 L9 _! e1 [6 {$ j/ m1 S; g
<statement sequence1>;
% w: p6 ^2 \$ | elseif <condition> then! g3 _4 M6 y6 y# S
<statement sequence2>;1 a2 m) x5 x3 G e6 J! y2 p) \
else / q# i. W7 }+ ^$ e9 }$ T% y
<statement sequence3>;& ?5 b6 D0 z+ t7 G' ?" B V
end;; v+ B y6 S P# `
如果分支比较多，用：0 `$ ^) V3 C6 M
inspect <expression>
7 o# u) d) I' g; S% z when <constant_list> then
9 g' `, C: L% V- Q9 c4 p" h <statement sequence1>;
: n9 n- l3 b0 }! a3 k* n6 L when <constant_list> then
2 t" b: H6 L" U- z$ ]$ R <statement sequence2>;& N; ? t1 p2 j; F2 p
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else
' }3 L/ g8 B! t" d& R* q! W <statement sequence3>;
7 O" _, J7 \' {) w8 z0 P. }end;; k* M4 {6 h' s; i
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2循环语句
3 Z( m/ |' p! f7 ^" T W& G* B (1) from <statement sequence1>
- q0 b: R! Y d4 n until <condition> loop& T% }* Y) W) |" s- X4 g
<statement sequence2>;
0 c( k/ q6 f9 L4 A+ P0 c6 S end;1 B( v) f6 W9 ^1 \' M; }! f
(2) while <condition> loop
0 I1 @) K% \% l9 j <statement sequence1>;
8 z0 c/ }8 _, {( L! {# Y end;4 h7 J( s$ M6 N, I
(3) repeat ! a1 J; Z; j- u% `5 ^
<statement sequence1>;
+ w4 V3 h2 y) M0 M7 Q until <condition>;
3 {- J$ B/ v- K (4) for <condition> to <condition> loop
& X1 s# T6 U$ C9 I! j+ N% e; B7 ^ <statement sequence1>;- s3 K8 a X# H* l) C8 d
next;7 V" u% ~6 H0 h7 ^2 n
3中断语句! t* e! c3 N1 H
waituntil <condition> prio <integer expression>;- y8 J! i( h/ a) m
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" }0 h# t3 d7 `* l5 [6 e0 a以上为常用的函数！' p: }0 `: n& h6 D; c+ A/ G& z, b
还有很多，如有需要我把资料发到你邮箱里 4 ~" }! {# }# s% {! Y7 o
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