|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
2 J/ y5 |5 H1 M3 D if <condition> then+ v: f% ~9 D: I' K
<statement sequence1>;% L3 J8 D ^' m. S# G4 p
elseif <condition> then R6 R+ i" l8 p! W- j, u5 x
<statement sequence2>;
8 c0 X0 @7 f5 L0 E6 e2 u/ z else # L( h9 d0 m2 ^5 [- o7 V
<statement sequence3>;- c4 q2 g f+ ]$ D/ ~6 w1 {+ {
end;
( z" S3 {6 g) k- R) H如果分支比较多，用：
# W4 K: n$ r, j/ w* {. |$ M8 @ inspect <expression>
$ v( H# p0 X% U8 e7 O6 ` when <constant_list> then3 W4 o. m9 ^0 @. E4 }0 q" p. b0 I
<statement sequence1>;
9 @' W/ i. @( L$ W) W9 S* [& { when <constant_list> then7 l% t! E5 t+ K( ^2 a. t5 Z' v
<statement sequence2>;! R2 G5 E" w- U; f* k' E m
...' P2 q+ N+ ~/ ?2 K. B) R
else
1 V9 X2 c0 e2 A <statement sequence3>;0 ?" ~6 v0 {2 S# G( B5 `8 |" Q5 k
end;, D0 K0 e ~9 u8 u6 w9 [
5 @$ J; F" e: P# y9 W2循环语句
9 w1 B$ Y; @ P- \1 M! x7 _ (1) from <statement sequence1>
4 ^" A) I: t: ~2 s until <condition> loop
* S0 M- A* p/ P$ a1 Y <statement sequence2>;
1 U4 o: X0 N+ E; w6 J end;
/ ?8 X" s5 N9 A# Q$ v4 K (2) while <condition> loop3 W4 Q! L$ l% S, l
<statement sequence1>;
7 U T8 g9 p: e4 q/ ?( H- y2 ^ end;
# i1 c9 Z8 k; W+ r (3) repeat ) C/ u8 A+ \) z- H' P) G$ r5 V. H5 G
<statement sequence1>;
. [8 p% g1 ^; {: M6 Y7 [ until <condition>;
`) r5 C* F; v1 R (4) for <condition> to <condition> loop. v2 _; q! X3 y' Y
<statement sequence1>;& ^+ H1 V8 u' w5 B# v) k
next;0 Z1 t7 ^( w, i; {: m q8 N
3中断语句! Y+ v( R; f% P) `
waituntil <condition> prio <integer expression>;
; f9 @) o- S- c! Y3 D
3 [/ M! R+ e5 l. T. n8 n. v7 h
! x# G( G& `- p+ z2 L以上为常用的函数！- ^" j2 _; j: f9 f
还有很多，如有需要我把资料发到你邮箱里 ) B% i& m$ `" L9 _; j
1 X. o' r7 _) y& H$ r: q
' k1 q5 a B& b
" A0 R& W/ W. v . D$ {$ a6 P, T7 Q
5 ~/ u* m. c3 [5 v5 E8 D9 k( E( {' o& g0 q2 X
! }2 {. m7 @' _' c7 Q- {4 {9 B
: u: u' Y% u% d: E4 M
8 a+ Y8 O4 i; |$ ]) f8 ?5 z9 M
- s0 V8 b) g% Y9 g+ l
|
|
[复制链接]
