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发表于 2012-11-13 08:48:12
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1判断语句
) b; @4 O w& E4 M- X if <condition> then
! g) p: C9 S5 C6 B <statement sequence1>;
; [1 t3 y3 j2 \9 d9 S5 u5 E! | elseif <condition> then# o* N' ~! H% {- d
<statement sequence2>;, H0 ~! ^2 U5 @. `, U) N/ m- B5 i
else
# P) ~) x, v" }3 X <statement sequence3>;
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如果分支比较多，用：
4 X) r0 @ h6 a/ h3 u: G9 x6 G inspect <expression>
' z3 k9 F. {8 r/ b when <constant_list> then
* I+ }6 D% Z9 v% b <statement sequence1>;
6 i: [7 D0 L; k when <constant_list> then
! X# Z, B. w- \/ O3 Z <statement sequence2>;
8 \3 b: m2 g2 O/ f" @% V5 V8 b) I ...
( y( M5 v- B4 p( p else
6 r1 F( ]1 _5 P& Z# J; r. H) a <statement sequence3>;
% {8 m+ ]) ?. C1 N1 \end;7 P7 K5 v$ I/ G- N3 o6 p, _% ~
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2循环语句
" ^. ? t0 C a' S- ? (1) from <statement sequence1>
0 G0 Y e+ N1 y% z) @+ | until <condition> loop/ J9 }: P o: X% _: t
<statement sequence2>;0 i- Z, `) h0 i2 W
end;
8 T r3 b. d2 `7 V (2) while <condition> loop" V: `0 |3 \) M" u
<statement sequence1>;
! }0 p$ g6 }* c. h end;4 e2 e9 D z' V! j" L( N
(3) repeat 7 p& [& F" c/ u2 Y: Y( G- j
<statement sequence1>;- Y3 b; _+ a& u
until <condition>;+ J: J: s! J( X! ]7 ^
(4) for <condition> to <condition> loop
* b0 Q: ]1 U9 l# ?0 P c <statement sequence1>;
3 x3 m) P6 `4 T# [; L1 w, I; s2 ~ next;
0 t3 b, x0 M7 O+ z# A3中断语句
/ h# H) E. i8 \2 X% k* A8 j waituntil <condition> prio <integer expression>;/ _3 h s: H( n, \
5 e8 {( r9 [' s3 f
4 m2 A0 C! R% L2 t以上为常用的函数！
+ Y3 A) F4 a0 z6 @) K还有很多，如有需要我把资料发到你邮箱里 1 ]9 C, o' T1 e$ F0 E' _( o
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