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发表于 2012-11-13 08:48:12
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1判断语句
; |# p4 a% f. | if <condition> then
V, U" I4 j6 `# l- F/ [ <statement sequence1>;
3 m; ]6 w6 W! z$ N! }6 I elseif <condition> then, p4 u b! F0 c: s4 X0 a' t+ V
<statement sequence2>;* j: F# i) n" Q; v
else
! H/ y% }$ W6 r <statement sequence3>;
M$ Y+ J" J3 A" F8 o9 }+ F- v end;
% Z% M; n. Y7 }( O- R% Z如果分支比较多，用：
, B6 J' N5 U* X. K' G6 L- e. x' |9 W$ \ inspect <expression>
8 |: L% l! k/ s( t4 w) d when <constant_list> then, G1 t2 {: \, J$ }- k
<statement sequence1>;
5 a: v3 w1 }6 R; ~$ \/ ?; h5 X when <constant_list> then
. K/ F' _7 m+ W9 X; X <statement sequence2>;) k7 z8 ?- R' M2 I, J. \9 h+ C
...
# Y& S# e. d- @+ x, } else
5 G' I$ k3 x" y <statement sequence3>;" y; v' [) y$ s1 T6 D# S$ Z& s
end;
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q5 a" }0 r! }0 F5 b6 [2循环语句: D) k6 u2 J& B- h( e% u
(1) from <statement sequence1>/ a. `. _' ?7 z0 ~. C' t& O4 y
until <condition> loop
; a& F1 k L T <statement sequence2>;
" i! U$ j) V$ w2 h end;
, G: W |* u! n4 ` (2) while <condition> loop
, S; @: D q8 d2 ~9 A/ M <statement sequence1>;
+ U! W. |# M5 p6 r# E4 j end;9 _' f" J; m0 A: v. k8 \
(3) repeat : }6 ^$ O5 B/ ?% H, O. q; P
<statement sequence1>;
4 M) O, W ^; b/ L- L until <condition>;7 m. U: U" F! l$ n
(4) for <condition> to <condition> loop! R: T1 e! F# ^ j( N% x
<statement sequence1>;
1 U) p& M1 C$ q8 S9 e next;: ^6 R; D/ q& c' E
3中断语句, o! |% s) _6 Q+ U3 Y% w
waituntil <condition> prio <integer expression>;5 y: B. m8 X0 N& j! I. m
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$ ?6 Q( Z) f; g7 |2 H2 s4 ]& n# G$ n# K以上为常用的函数！4 k4 |3 j: o' t( x" W
还有很多，如有需要我把资料发到你邮箱里 6 s4 _' }2 l: k% Z
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