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发表于 2012-11-13 08:48:12
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1判断语句
# d/ V) u2 F0 w3 x# \9 w if <condition> then* e5 K. B" I- R) N" ^
<statement sequence1>;% Q) M) K, y; P+ [- ?
elseif <condition> then9 I7 `' j' L* E( z- ?5 V# F
<statement sequence2>;8 X/ H' \$ r- f+ {# C! c% \
else
! i. S/ h. E* {* s. Q e <statement sequence3>;
# W$ o) f+ l1 j! k# A3 ^ E# [7 {2 v end;
6 o# ]$ r" t) D1 k8 q' ^6 M) i如果分支比较多，用：
R, o3 g g( u3 x' S inspect <expression>
! g) w. e: @! Z% k: }+ E when <constant_list> then1 W# r x. J3 a7 L0 O7 ?4 j
<statement sequence1>;
m, I% E* t, ?& U) K when <constant_list> then
* w& g0 E2 t6 v+ M( l <statement sequence2>;
- W! r* h7 `; U& U+ r+ e ...
# g0 z# z2 x) _" @2 q else
. Q4 ?4 I5 {2 |1 C7 U" C' R/ U <statement sequence3>;8 {/ h- x( }) ~" j3 s0 M
end;
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" H, P! C) y C1 R2循环语句
4 R: {. N5 X" F% u! f (1) from <statement sequence1>
8 p6 p) B U. C; J until <condition> loop& S, N7 V' q5 H8 C( |0 Q2 X
<statement sequence2>;
: G! x4 @. x) ]- E9 {+ L end;
' Z) d4 b7 I% X (2) while <condition> loop
; T* a# E5 D: B! Y1 T <statement sequence1>;% b! |# Y4 B( h ^! Z& W$ Q# N" U1 {
end;' K2 |: w5 U o7 i! r
(3) repeat , d: W4 k4 z* j+ u* |4 d' {: p& |
<statement sequence1>;
0 O/ [4 O7 Z, [/ `0 R7 f8 s4 _ until <condition>;
! [! f6 s: F% [0 s$ k (4) for <condition> to <condition> loop
$ Q2 Y$ k5 s+ `! Q$ a# @ b: C J3 t <statement sequence1>;3 k* K9 v3 |7 V
next;
2 E& z& ]/ W1 Y3中断语句
% `7 l9 n' s. D' ? waituntil <condition> prio <integer expression>;
$ g- W8 a! a% l3 }7 V& Z, u# p* A: l3 v
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以上为常用的函数！" f$ X" l( T0 A& t4 I3 M5 M- V
还有很多，如有需要我把资料发到你邮箱里
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