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发表于 2012-11-13 08:48:12
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1判断语句
! o, c3 t( a% A: g if <condition> then
5 _6 _; }3 t0 F; Z <statement sequence1>;/ f3 w8 f9 d: f3 z8 R2 }. e7 T3 d* u
elseif <condition> then( _" w( N; z/ P* e- }* h+ c) @5 G. ^: g
<statement sequence2>;8 e) L9 v# Q5 ?" n3 _& A
else 8 c7 U( ]3 ~8 U& `! Z* @
<statement sequence3>;
9 t- |2 {1 W* |3 i; u/ O! X9 t1 \7 f end;
3 _* H3 ]3 l% X: G+ a如果分支比较多，用：
6 }# [9 S8 s8 d" J inspect <expression>' T4 N l1 r0 c: _
when <constant_list> then2 X# q& n, ?1 {, R
<statement sequence1>;
7 F/ V8 T% G) }% U5 u when <constant_list> then* \4 P) u) \8 W- y" {9 ?
<statement sequence2>;5 X" j5 L6 m( [9 {+ ^
...$ ^! U% J+ O1 c0 Q$ ?
else, t2 Y$ K5 W* s- m
<statement sequence3>;
5 R# M9 I" J) H _, rend;
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2循环语句- k" |! c1 K6 c% X
(1) from <statement sequence1>0 t, B2 E( U; J
until <condition> loop
2 x) \5 ?3 G- B7 N8 N <statement sequence2>;& v# i4 \5 S3 B" I( Q
end;) T: R$ n7 W5 Y6 X( Z) S" O; C
(2) while <condition> loop
4 @1 k' D c* F, m: m <statement sequence1>;) D. k) K. b9 j3 k$ \2 g1 _
end;% m' h9 v" F! _; q8 t6 ^; ]! \8 M9 V% j
(3) repeat 9 t$ G9 p$ v4 Y
<statement sequence1>;
' H2 ^9 f$ J z+ F6 a+ ~# i$ [/ o until <condition>;
8 ]* G* w, S. T$ Z& Z6 z' K- K (4) for <condition> to <condition> loop, z2 x7 Y- E# D1 B+ K5 l
<statement sequence1>;, o z* \# @, N' V) C* X) Y5 |6 V& |
next;& u$ V' n0 \. _' X& B
3中断语句$ v6 r5 u% ?7 [& [
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
7 p2 c% K( m1 I. q% }' x还有很多，如有需要我把资料发到你邮箱里 # Y9 p5 g6 g/ |5 Y/ s6 ?) P
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