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发表于 2012-11-13 08:48:12
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1判断语句
4 J' Z. H7 ~6 K# b d- Y9 \$ E if <condition> then
j- J1 w* j5 ^ <statement sequence1>;
0 F$ a# u1 R& J* M2 C elseif <condition> then
0 |5 N& K! a$ E/ ?) `) f <statement sequence2>;9 ]5 Y. a! M: w/ f4 N3 q
else $ U' v( S2 o7 ~% A: c
<statement sequence3>;& k7 Y8 B0 p$ l3 q3 `9 A: n
end;
% d, i! P+ U3 C8 Q如果分支比较多，用：
0 I+ s) T* o" A) C5 o1 v& X4 l inspect <expression>8 `8 P9 O+ x8 H, _8 ?
when <constant_list> then. \1 |" y" s4 i( U
<statement sequence1>;
( u4 b, c( |% A; Q when <constant_list> then+ _4 v B/ R5 u" v [ ^: n& x/ K
<statement sequence2>;
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else
2 u, P# K" N- J- | <statement sequence3>;5 S4 H$ i% d. j" l5 H5 \! i# S% Q
end;& e" i3 f: f5 M( O4 ?; ^
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2循环语句, t! l! f+ Y5 t3 m9 I$ K& L2 G
(1) from <statement sequence1>
8 P# P0 K# f0 h) Q until <condition> loop: i$ A% u3 r9 A k1 `
<statement sequence2>;
/ h. i" t2 w' C6 `9 `) n6 F! Y/ z end;
" f, l1 u7 u* t (2) while <condition> loop
* }4 c" i3 c# {) l3 @ <statement sequence1>;; \% Q% F4 X2 i4 {! k4 i
end;+ I- v2 N. e# F$ S2 Z- U" V- x/ y
(3) repeat ' A9 A$ M7 U |
<statement sequence1>;5 k6 c4 J1 \% G3 v% b4 K0 E8 f
until <condition>;
5 J9 B6 F# d% | (4) for <condition> to <condition> loop
, A) v6 o6 A8 }7 U1 j; K( U2 W) f4 a <statement sequence1>;
6 A6 V; i( }0 h: M9 d* { next;2 A3 x' L' P/ s$ Q4 \2 ?) h
3中断语句, r+ U. X, l* |
waituntil <condition> prio <integer expression>;$ C- ^- g/ M p$ }# ?
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以上为常用的函数！
7 R3 p6 u; |, _: z. I) a& T还有很多，如有需要我把资料发到你邮箱里 6 z7 j1 P1 W H9 F5 B3 B o! t
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