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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
0 e' o3 m% J$ H' B if <condition> then$ ~( q; r8 P, A1 `4 P9 `
<statement sequence1>;& _* f" |: _; P2 ]; n2 g7 E8 Q8 p# l
elseif <condition> then' Q( f7 f8 n" A0 A. b2 q
<statement sequence2>;
& Z+ S* B# }# i: y else # U8 Q. _. r0 M& Q6 k6 F( C
<statement sequence3>;# [3 V# ]2 X, c. F: C
end;
2 C& g& m# R) ]" D2 O+ P# E如果分支比较多，用：
9 n3 D9 i) h6 K5 c) L4 F inspect <expression>9 ^; Z( S6 r, J' o2 O" G& y, t( a# n- C
when <constant_list> then! s. A6 d( ?) ?
<statement sequence1>;$ i5 n, @: D% G8 W8 r# _! ]
when <constant_list> then
8 c0 q$ e0 U( g4 V <statement sequence2>;8 T( z% a* ]! v. i( a9 R6 B. O) o
...5 F7 d( v- n$ y! z& z1 f
else/ \2 S1 k( n8 h- C% D, j+ H5 {, }
<statement sequence3>;
: }0 u2 Q4 E% O0 E" S/ |1 bend;
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2循环语句
. p, ?9 v9 ]' h9 i8 S' M (1) from <statement sequence1>
, a/ @% h- l `+ D8 u* X% G, G3 \$ U until <condition> loop
! o" `7 r1 U2 C2 E) H2 q' a" Z <statement sequence2>;
" `- }, C, T9 C$ y% h$ [; s" g end;
- a' R& a2 T/ k' }' [" B (2) while <condition> loop
' W4 K Q8 G/ V9 R1 @" s& b <statement sequence1>;
# W( Y7 b6 h3 l9 X5 Q3 s4 Z end;& B+ t# Z# d! ]# f8 Z
(3) repeat
/ X6 b# [2 v" ?, u+ [! m <statement sequence1>;, B6 E B% i, s3 n* E
until <condition>;9 ]; s; x$ A, w1 y
(4) for <condition> to <condition> loop/ l9 I4 n2 v, L4 b$ R* |
<statement sequence1>;
9 y* P/ Q4 {- D% E0 y+ E next;
9 H: P- o' q O5 b% C5 ?) H# Z" W3中断语句
0 ?" c6 I# w M2 o" l* j$ g waituntil <condition> prio <integer expression>;
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8 v, g* |: U- k1 K以上为常用的函数！
+ s/ e9 R2 C& C6 k5 q0 I: u还有很多，如有需要我把资料发到你邮箱里 % H4 C' K" V O0 X+ M+ S
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