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发表于 2012-11-13 08:48:12
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1判断语句; R7 D0 o2 m4 C
if <condition> then
5 d; I0 V7 t( w! T <statement sequence1>;
1 F6 S$ b, O* |" I# N" P4 w elseif <condition> then
. D! f! k" V4 t <statement sequence2>;: ~) I4 @! U( M2 u
else
1 a G$ W& N; R. y" `, b4 t <statement sequence3>;* e( w5 c4 m) u* n
end;8 O# a- J6 c; }! m, g4 r
如果分支比较多，用：
! n* x+ s) p7 M( }$ s: Y7 v inspect <expression>% W7 r" r; v! G4 {4 i, q
when <constant_list> then. P9 N2 D3 r8 @# ~9 I7 ]: f
<statement sequence1>; r- r. m/ i8 {2 A* Y! ]
when <constant_list> then" K( {& u9 T$ N1 ~0 C, v
<statement sequence2>;
3 C2 d' Y5 o* [3 l4 O ...
9 Q+ d) B- Q5 X: B s else
5 g) e/ h; X% {3 k+ ]( n <statement sequence3>;
/ n( |# k) i7 X1 O* _end;
5 Q m3 Q& o$ T8 n' h
" k" Y- ~) p! k5 p8 U2循环语句( C# ]1 n0 l/ {. [( `0 ?0 e" N
(1) from <statement sequence1>! c; [8 y7 Q' `/ l! a$ [
until <condition> loop
8 ^' q6 c8 [* R; _$ h2 W <statement sequence2>;
; Y+ u$ l8 S7 A C, | end; T" S1 c" a" h7 v
(2) while <condition> loop9 ]1 m9 h0 G1 A# m4 k& [
<statement sequence1>;" g$ _$ e+ `; M. U- T
end;
2 e+ L5 Y7 t4 @7 V0 R% _$ q8 P (3) repeat 0 I3 ]2 ^& P' n2 Y: i( `' H3 c
<statement sequence1>;, r, o; e) G' s. e
until <condition>;3 d7 e& Q9 m9 z6 ~
(4) for <condition> to <condition> loop, Q+ ?. i1 b% m( r' {
<statement sequence1>;
- [3 t# C3 y1 Z7 Z2 g$ K next;: F4 K7 v0 i1 c+ J0 Z; F
3中断语句
y2 s$ F2 I6 c/ G* [, _ waituntil <condition> prio <integer expression>;
; W( z1 N3 h7 I6 L& `" H) a: z& D) l: Y7 L6 U; P& [
! I8 R2 a+ N' D! J
以上为常用的函数！
0 y' _7 I5 _/ P/ Q9 k还有很多，如有需要我把资料发到你邮箱里
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