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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
5 z5 ^9 q1 C$ L+ k8 h5 c9 W, W9 j if <condition> then1 t& z4 U) z) z8 M
<statement sequence1>;
+ f, a+ G+ L; X% q/ t. d elseif <condition> then2 H" b) v4 b1 D0 U6 f
<statement sequence2>;- z; j2 j# ?* C* ]7 h, Y0 c
else 3 m! r- C: O* t. |/ ?% C0 R' p- {
<statement sequence3>;
E e$ y! `; d8 _6 p7 s# [; C end;
. v5 x7 o g2 ]' G) y如果分支比较多，用：0 Y8 G; @1 \1 u7 W! m5 [
inspect <expression>
! Q( t6 i7 V3 q d& L( A# w when <constant_list> then! ]3 N4 [" c/ B8 d
<statement sequence1>;$ O6 @! D+ j6 K
when <constant_list> then) ~8 M' w4 {( Q& B
<statement sequence2>;
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else# {8 I1 O0 q C7 `0 i
<statement sequence3>;! N9 G& |3 k6 A v. T2 z# F
end;2 s; W- {$ e: Q- C
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2循环语句
& ?9 t# i# c4 q9 ? (1) from <statement sequence1>/ l, z2 V# y2 A$ P4 B8 r
until <condition> loop
T% e: O7 m" M0 j% H <statement sequence2>;
& o P" u" U. } end;
& _! o' k6 ^; j) S7 M: G% T (2) while <condition> loop
" N% T X0 C! J5 k <statement sequence1>;6 U; g) S) C& b# H$ r3 R
end;
% z' K: K2 O$ B* D (3) repeat
- ]( [" ]0 l* {* {. X% [6 S+ [ <statement sequence1>;- z8 X" X1 R" ^0 Z# @
until <condition>;
2 | g% q- Q, L1 f0 P (4) for <condition> to <condition> loop$ Z& [) _/ C0 Y. C) Y5 ~6 V
<statement sequence1>;, l; X- b9 k9 V) ~1 a0 `/ G: ]) @
next;1 N$ y1 B8 S5 p2 G" o# W3 U6 F8 _
3中断语句+ v; h" B- b5 @ h8 w
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
! C7 X2 B* v* `; I( q- K还有很多，如有需要我把资料发到你邮箱里
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