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发表于 2012-11-13 08:48:12
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1判断语句
# E3 v: H4 _' L T7 q0 t1 u& x6 w' r if <condition> then
* W4 f9 H# ^( D4 k" j: [" u- O4 }% Y <statement sequence1>;3 [ M/ K6 s7 d2 A/ J& G% R
elseif <condition> then
; r) a& X% O: ^ <statement sequence2>;
' R$ @9 U) q1 f7 `* H4 B- g else 2 ? |! m$ u3 U0 e
<statement sequence3>;
* L- y7 V/ Y- ]- X# f end;
9 @" j/ T9 D# \1 `. v如果分支比较多，用：
) v& N3 `& u2 _8 c- L$ D inspect <expression>% n% x+ ] J. [- c9 M
when <constant_list> then
# H$ z& u+ m- b7 u; u <statement sequence1>;
7 j" \% z( O- A% n+ u% [ when <constant_list> then' }/ T- [: s( K5 {
<statement sequence2>;2 C; u4 N/ p, ]* s; S( H$ d, T
...
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<statement sequence3>;$ M' o' e2 K7 a4 j* `# }0 T
end;
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1 I$ z% y& s. t+ q8 H: ~; s2循环语句
* C$ ] u4 \9 _6 b; a (1) from <statement sequence1>: J4 s- Z8 B0 ]& ~% {
until <condition> loop
. K2 t5 ~( G) L0 O' |/ c7 J <statement sequence2>;' y7 a/ O1 m8 F
end;
- l q& ]4 _$ W% M2 p: ?, @3 Q (2) while <condition> loop
* y% Z4 @3 i& w9 t& x <statement sequence1>;
* A1 X1 [3 V. \. D7 k0 B' z7 D7 I end;
/ F [# y/ _/ h- ~% c+ p (3) repeat 1 O2 p( t6 r" q& ~7 N/ t4 f
<statement sequence1>;
9 }4 i. d. p4 P$ S6 P2 Q until <condition>;
1 T2 R* i7 O2 y9 H' E* @% d (4) for <condition> to <condition> loop4 j; d1 e0 V0 j y1 a
<statement sequence1>;% o& p: l$ k i. Z6 C5 [/ F" {
next;
3 X; f- o, q. E. ]2 K: J3 Q! j3中断语句: j+ y* ]0 D& {; m2 u
waituntil <condition> prio <integer expression>;* N: \) O& o/ Y0 ?- e6 ^! Q+ P
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以上为常用的函数！3 \' u+ }3 O; K* E$ ^9 T$ t- J
还有很多，如有需要我把资料发到你邮箱里 8 N. e) b* [# m8 H5 ]6 e
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