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发表于 2012-11-13 08:48:12
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1判断语句
$ t) _% g# s! [1 b: c9 R6 B6 \ if <condition> then# w2 M" }) z6 y6 D
<statement sequence1>;. |# W8 ~2 M6 u @' s
elseif <condition> then
+ H% _& u9 [7 c, \* r <statement sequence2>;: O2 G) u0 i% S
else ' g$ O& E! R8 f$ n8 d& Y! J4 U6 S F
<statement sequence3>;
4 u3 f3 R$ \- }" m end;$ n8 ~- D4 ~6 m! Z# z5 V4 x2 F" k$ y: k
如果分支比较多，用：( B _' Y# o: z: ~7 G$ O: V7 u. T
inspect <expression>% c: e+ O0 F) X6 o& m% T
when <constant_list> then
" i1 I( c. P6 l) U <statement sequence1>;
1 `. k0 K1 |+ q6 P u- D when <constant_list> then
# a: b; _. B9 \/ x, f! Y/ K3 n <statement sequence2>;/ @0 a$ {4 h C6 C) [- v
...; a( Q: r' Q$ u$ s$ E$ k
else
* q9 z( s1 T+ }/ s6 \1 m d1 p <statement sequence3>;8 o: J- k6 {3 Q" C6 Y
end;# q4 Z. J2 L# F' l
/ Y& [0 {% [4 g9 y2循环语句
3 m& o0 b$ }( x: J V% H+ E8 a (1) from <statement sequence1>
! P: ^0 H1 h( z% O$ s# w until <condition> loop4 h, ~2 L; ]+ p2 j! n# @ g
<statement sequence2>;
& r9 C! B; d2 v: d- Q8 Z end;" }! z! B4 D$ w' a. K
(2) while <condition> loop
8 S9 u" x2 j4 H2 ^ f <statement sequence1>;
' I/ J1 @& k' l C' e end;) ~1 x! q( K- c6 L0 w& p: R
(3) repeat ! a7 \* d7 g! K8 u
<statement sequence1>;. b% O X6 u2 H- c% r7 U. N$ J) ~
until <condition>;
. }; K5 N& d2 @* F9 D% Z (4) for <condition> to <condition> loop
8 f# M* A6 O7 g7 c' N <statement sequence1>;! d: k! b& G/ H, G& M4 w* S
next;
. g) {1 E" L4 A& d3中断语句
+ f+ l6 l0 u! l& C2 G waituntil <condition> prio <integer expression>;
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+ j7 T7 ^8 B9 B' j" _& s
2 p# C3 E) l: }- c( V8 c. s1 F8 }以上为常用的函数！
0 }& G( J3 T# v3 F3 I; w6 a$ C# N, i还有很多，如有需要我把资料发到你邮箱里 % o! ^0 o# x9 p8 H
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