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发表于 2012-11-13 08:48:12
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1判断语句
( O" |8 K7 S0 z if <condition> then- H2 f7 A* Y" Z& F
<statement sequence1>;& A; s# B& s8 C& f9 j
elseif <condition> then- o. S2 X, r1 E/ k
<statement sequence2>;" d% w$ x6 M* o: _
else
+ w' V5 h6 ? a: w: p <statement sequence3>;8 D7 _/ [1 K8 j8 v4 i
end;
; m4 s* u, I( [0 ~4 W3 p) Y* s! ~如果分支比较多，用：: |/ }) j) w+ T: b0 f9 d7 t. _
inspect <expression> `& S( k% r8 C" G* G3 b
when <constant_list> then
1 f3 y. U+ U; o3 q- N$ ?( p <statement sequence1>;
( D: N# p: s3 ]; ~ when <constant_list> then
' F8 I/ c+ o) u$ V( Y2 z <statement sequence2>;
5 ?: u4 ~+ Q% R- p! z ...
& K3 t* \7 [/ Q5 R; q) u else0 @8 c% G' j% F! D! X( p
<statement sequence3>;& f5 |1 @% j! l! C, u3 B4 p4 E
end;0 a" H" [7 I5 }2 O& K" t
* o# O, H1 G+ P$ f* y1 R2循环语句. Y5 f4 `# L* L0 a8 k- }
(1) from <statement sequence1>& e* J7 D- Z$ ?, e. ?3 p# O2 A1 X
until <condition> loop
2 \1 X. \3 Z% E. s <statement sequence2>;) w8 n2 u. O7 ~/ d4 B5 D
end;
# q: r3 y# A1 V" t1 }9 z (2) while <condition> loop
5 F0 W6 b# T- Q2 o$ k% I( i7 R <statement sequence1>;
# a! a7 J! U. w# C2 d end;' @( x3 Q" x) e7 Z3 n
(3) repeat 2 ~& L: |8 w6 w" K
<statement sequence1>;- H& U) `0 X6 G( C, Z7 U
until <condition>;4 N; {0 w7 h$ O! B( P
(4) for <condition> to <condition> loop# A, `* L- E& G8 g/ F' c
<statement sequence1>;
$ Q! c* x* \& }4 D' U next;% n. W- R9 A1 t% h+ S
3中断语句( O7 n5 U( d; U' n# C4 ]
waituntil <condition> prio <integer expression>;- r3 V( R8 C, ]8 ^" @7 E
5 K( ]& I8 j3 N$ j+ F
: F& K" z; R, `5 I: ^! n. ]1 E以上为常用的函数！9 {$ `- ]) O6 A$ L+ q$ J- d
还有很多，如有需要我把资料发到你邮箱里 6 Z9 w+ Y$ b7 ?; q0 O; V
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