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发表于 2012-11-13 08:48:12
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1判断语句
4 X5 R- U% E$ y7 U if <condition> then
' r, s1 x- K9 ]9 i <statement sequence1>;
2 _0 c& ^& ], [* g elseif <condition> then; E, Y9 E: D0 u
<statement sequence2>;+ Z* f2 a7 [6 |3 k' l6 s
else
% P1 n4 a2 r6 }9 m2 h% v, B+ k( _ <statement sequence3>;
0 H5 r4 h8 f6 U/ j% k end; q. b+ S/ ^( L! u
如果分支比较多，用：
J* V/ E# W% t inspect <expression>6 C0 S$ x2 g' M1 Q- H
when <constant_list> then& i9 ^3 S5 b4 G5 l% d
<statement sequence1>;2 E( P# n9 S- S; S
when <constant_list> then
~. Q* M V5 [! B/ m( f$ w <statement sequence2>;! s2 \2 c7 d# o% c- v- j+ X/ H
...
& S w5 \2 a+ d% x6 J0 p) V else
) z/ a7 Z. `6 z( A& D0 s <statement sequence3>;$ p4 C7 x% c6 [6 \! x, c/ h
end;7 C. R* N3 A- k! z
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2循环语句6 q0 Q3 h$ Q$ O9 X; m4 v" Q
(1) from <statement sequence1>
# a+ ^) E! l" s7 ]7 j until <condition> loop
: j! H( a) g2 i$ l# W' U# H <statement sequence2>;8 C' e9 N0 w7 C3 H! x2 Q
end;1 G0 K: C+ B$ G8 u9 W6 S6 J2 S' R4 V
(2) while <condition> loop2 s. s; q( e, f% A# ?
<statement sequence1>;' R9 `0 r: o A# ~! {
end;
8 J: M4 D `% \/ ~! d (3) repeat
D8 L9 {1 @9 R& r9 N: Y! _ <statement sequence1>;
6 L+ U4 V: s' B3 @! E+ L& w; m0 k3 x until <condition>;6 V6 K8 H! W v' p: O" y: U4 k
(4) for <condition> to <condition> loop- c# T1 _/ w( l, R8 d: B/ W N
<statement sequence1>;
, R& ?: e4 w: g4 p( s4 o( ? next;( _ @: c5 u# }( A+ U
3中断语句
( q3 f1 s1 ]7 ]8 i! L waituntil <condition> prio <integer expression>;
1 N* K1 y' ~# [% Q: P9 O" w) P' V- l5 x% |9 d0 Y; _
+ ] w* R* s% s* K4 u! O以上为常用的函数！) M9 |. q9 p/ l9 a
还有很多，如有需要我把资料发到你邮箱里
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