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发表于 2012-11-13 08:48:12
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1判断语句
4 K! q. Q8 T4 R) n N if <condition> then5 B' q1 _* `7 b2 e
<statement sequence1>;, |2 f1 l9 m: B. W8 O
elseif <condition> then2 w* a9 s' Z, i; n3 ?; X
<statement sequence2>;; }3 u6 V4 m r$ Q, n
else
$ \! _, K: O& q9 b <statement sequence3>;& p* c$ y# n) K$ m$ s* j
end; a8 v' Z% m8 Q4 I: L2 q* x
如果分支比较多，用：
: l9 W2 ^9 c$ [3 n2 |: Y inspect <expression>8 Y6 k5 h* W2 C- @
when <constant_list> then
; I+ V. V* z5 Q4 ^9 d8 v <statement sequence1>;
" I5 W2 ?6 J# R f when <constant_list> then4 q( a5 H! X) f. M W/ q7 O2 m
<statement sequence2>;& w7 j( Q4 q2 b
...+ z$ p r1 ?2 m7 Y J! Q( U
else0 m: I9 R( S1 E* A6 J
<statement sequence3>;
2 d0 \6 |$ b! T% \4 p. X H2 eend;
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2循环语句' M: Y4 h! W' L3 C/ S6 `
(1) from <statement sequence1>
" {$ d+ t( T2 U9 o until <condition> loop
( H- R" G. X s |; Y3 x <statement sequence2>;/ w# v( o5 s) {4 y' v- B
end;0 `9 q8 u8 D4 u5 g+ Q- p
(2) while <condition> loop! h2 S5 W/ Y; E0 M+ ~
<statement sequence1>;
% ? g. f) q9 p3 ?( `8 G( U end;8 \! L$ [+ j/ K& X# J* \
(3) repeat 8 w) A* q2 F+ a" c
<statement sequence1>;
: P2 J* H' B+ d h( I* b+ ` until <condition>;- I j6 q) [7 |* G: p% ~) p4 D, E
(4) for <condition> to <condition> loop
8 b5 P0 B, p4 |0 K' a2 ?' | <statement sequence1>;
4 Z% _' @" a+ b6 d next;
A$ x+ r, Z( \2 T& _* s {3中断语句) V: E' \' P @; X0 M0 D2 d
waituntil <condition> prio <integer expression>;. x. q* O D, R4 i* P" \
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以上为常用的函数！% U% y# R) o' L, `) J) u2 p* ]
还有很多，如有需要我把资料发到你邮箱里 5 ]" c" I* g* u! p) M
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