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发表于 2012-11-13 08:48:12
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1判断语句
1 Y1 ] B. u6 F: p- j L if <condition> then% u' V# ^( x1 E5 N9 }, q% ?9 E
<statement sequence1>;
9 c; G6 o6 K6 s! W; a3 C elseif <condition> then. Q0 P+ h$ \; T7 B* o$ ^
<statement sequence2>;
9 L2 ~' }- [* h+ k- X! K$ T% n else
7 {8 Y0 z' W/ {% E% x2 K5 N <statement sequence3>;2 R9 {/ b3 H* [# K6 P( A8 v) B: O
end;8 d \! E" V! h
如果分支比较多，用：
/ \4 d, K$ ^, R3 E7 V inspect <expression>
( t S. _( o6 A: s( L; ` when <constant_list> then
" R7 }5 _' J+ y7 c9 S <statement sequence1>;
$ b# k* L9 F; D' }0 t: O: R+ X when <constant_list> then
! K: a- P9 F& Q; [ <statement sequence2>;+ l7 q/ w0 H; O# m
.../ L1 n$ R2 q& A, l
else
$ G) l2 f' ^, L) O& z4 G3 b <statement sequence3>;
1 e7 h& G% g! }6 u) E3 qend;
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2循环语句
0 A) ]2 P ^4 |' ~* c5 i- c (1) from <statement sequence1>
' \" Z7 W4 j0 l9 q) M0 @ until <condition> loop# v0 G# C8 P! R# U/ n; t3 G# T
<statement sequence2>;
4 b4 t0 Y. Q+ Z' m5 c/ w, [ end;" i8 b; g/ Q7 c0 r
(2) while <condition> loop- U8 I2 a1 r" L4 f- I8 D6 F
<statement sequence1>;
& u& u9 g! N( v3 k' O1 ^ end;1 K/ r# B7 G8 g0 ^- z- D, [
(3) repeat ~! c: f5 q! z; @" N) b' z; S
<statement sequence1>;7 Z5 f- S5 K# u0 S) L; A
until <condition>;
) N; u8 N# d E a (4) for <condition> to <condition> loop4 d4 P& D- S$ b
<statement sequence1>;
G2 z0 p* O# |: r8 d } next;' Z3 a* P. B- V& c& i2 l
3中断语句4 t+ h' I) g5 n4 {1 Q2 l; I7 d
waituntil <condition> prio <integer expression>;; P' f2 }) R r, o) k+ H: e: }0 ]
$ ]2 _( m# S, c3 o6 ^- s% w0 E! ]! A7 A
以上为常用的函数！7 M8 L) C! n: h1 Y! U- ~
还有很多，如有需要我把资料发到你邮箱里
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