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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
8 {8 t# _* m2 }2 V if <condition> then
' i, C% R; @1 u. `) \# I- ] <statement sequence1>;) U( ~, }0 u `1 {" A3 r
elseif <condition> then% B @/ `8 `3 a5 Y0 h# ]! M
<statement sequence2>;
5 z7 W+ V4 e0 d7 d else
! D, N3 ]! [3 q/ y <statement sequence3>;
1 c" P1 ]0 P2 c/ d6 X end;
: \3 k$ t5 B4 \7 Q3 G, o如果分支比较多，用：+ S4 B( u8 S$ r' q; }
inspect <expression>; M4 g# i$ F% {7 B: b
when <constant_list> then
8 |1 z$ l. g" e, y" ]! j: {7 V <statement sequence1>;
; U& c1 p. g2 n" O$ f7 I9 h when <constant_list> then
9 o- f; b0 D" P0 c2 ^' F <statement sequence2>;
2 F% D" c" r+ @, m$ J S: ] ...( R0 Z+ E- k- H# n: W& T+ c
else
- z7 \+ d( Z" ]. N' N" r* e, K( H <statement sequence3>;* K+ D0 M5 X+ `6 j0 ^, L: B
end;
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2循环语句: z; V2 C) i9 l& S
(1) from <statement sequence1>8 r1 w- {& _1 V, t
until <condition> loop
0 P. n8 w2 ^( S# N0 ]. W <statement sequence2>;, `3 f1 P/ Z# o
end;
( s9 T! W, a2 h. A' h* _2 A+ R (2) while <condition> loop
6 l# s" i3 U7 ?* S <statement sequence1>;: b' x" h; I6 o$ r/ Z8 q) m
end;/ W8 E# d- `; O+ p
(3) repeat
/ Y) c$ y6 |; k; a <statement sequence1>;
+ `# x F. j% S5 s" S4 R until <condition>;, H- w; P6 n; X( f2 X; I6 M7 c
(4) for <condition> to <condition> loop
* ~; k, |' _ e# Y <statement sequence1>;" @& z" ~, D0 R, f1 G
next;+ A! Y X4 E+ g$ M0 `
3中断语句
3 H6 E. ^. y+ j" w2 s, w waituntil <condition> prio <integer expression>;4 _: I8 M, ]* d3 @
$ f9 `9 d& |$ S; g4 R: a/ a
# @% E# k% |% G3 V* {, u% {
以上为常用的函数！
- n" |* `- |6 q还有很多，如有需要我把资料发到你邮箱里 ' P7 `2 h# o; S# u7 k2 P# V
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