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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
' v" A& w/ h) C1 v# {, R: c6 { if <condition> then
: Q- Q4 M. y4 L! S( N <statement sequence1>;- B$ a& x9 Y9 W- P+ P
elseif <condition> then
+ x# C- `/ h4 H" P0 u( D <statement sequence2>;
# W9 H7 R \# C8 m6 s3 [: { else
0 I& t8 d E5 j& f$ m <statement sequence3>;
7 H% T# @; S: s! L' A! l end;
2 y# z) S: u9 t9 C, s如果分支比较多，用：( v) `# w, C+ T: O, j
inspect <expression>$ n: J& U& D3 e" N
when <constant_list> then8 A, |7 Z Q& I4 j2 n3 O9 I
<statement sequence1>;
, X3 W9 x7 A/ L, _7 B+ j when <constant_list> then
& h* v3 ?1 b! `# G5 C" s, [ <statement sequence2>;# F5 H9 O) O- N4 {
...3 C: x. ^9 C# Q" A% K" I
else$ x% r) I t. t+ X5 l# @
<statement sequence3>;4 e4 q& Z; B. R: M8 Y6 r; j5 V
end;) j# S# M8 |! ?6 x, f5 P8 C" [
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2循环语句
/ W, { p% }& @ (1) from <statement sequence1>
) Y z" u6 |/ b- I) d- w until <condition> loop5 D: T& c* r9 y! \
<statement sequence2>;# k6 Q; M6 O! K9 C) {1 {: F% ^
end;
) B. C7 |* O# m (2) while <condition> loop
+ g6 `' s1 j, l. v3 _ <statement sequence1>;4 Z( y; ^8 w: x" f6 g v h
end;
5 w4 ]& h5 ~1 B* {9 N1 W: I (3) repeat , Q1 t7 f, [2 p5 T1 D3 }, V) Y
<statement sequence1>;& {1 w7 \& X" D3 J" _6 e
until <condition>;: Q& Q5 Z _ A; Z3 @* f
(4) for <condition> to <condition> loop
1 M, ~7 J% c+ @* r& e <statement sequence1>;
+ O* a5 X. h7 u4 k+ l4 ?: m/ ` next;1 Q- `2 Y8 P, T* z" j
3中断语句$ B7 H$ o7 v" `, o
waituntil <condition> prio <integer expression>;
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: d% C( Q/ c; a) Q; a+ x, G3 w以上为常用的函数！# y1 e7 z% i/ p2 q& x }5 A
还有很多，如有需要我把资料发到你邮箱里 6 M5 F5 K+ V+ K) m& b
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