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发表于 2012-11-13 08:48:12
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1判断语句3 y/ f6 A D1 i) S$ @% B; M
if <condition> then
" E3 h8 e1 P/ Q/ f$ @4 f3 R( } <statement sequence1>; N* T* z& }. P) W) n/ r' k% F3 y
elseif <condition> then( q! V: Q/ v3 a8 x1 j, Y. Y
<statement sequence2>;2 b3 g G' w# q
else
" O5 D8 ? E8 p5 e. P8 a <statement sequence3>;: B" N# A0 f# T5 }, f7 x
end;2 b5 Y# j, X: H6 V( u/ } L7 I# B
如果分支比较多，用：/ j1 A% P E2 Y+ E% F
inspect <expression>6 {5 ]+ T1 x: Y/ F/ _) U
when <constant_list> then3 z5 [* H) G% l# R' |5 W
<statement sequence1>;
* ]1 v0 a. l9 @6 O6 _ when <constant_list> then
7 q: @7 Q z3 s9 Z <statement sequence2>;7 G' \# Q% Q/ X( [8 m6 x6 R
...
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<statement sequence3>;/ B% P' R- x/ Y |+ d) }
end;; c- k& {9 l, K
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2循环语句
6 `6 d3 n1 u6 G6 I1 h3 r (1) from <statement sequence1>
: E) s2 E2 }5 |. ?/ a until <condition> loop- M' ]2 d* C$ w( h: _. b' w
<statement sequence2>;
; Y! `6 H# E: e! k! v' c: I& \# P end;
- y% U7 g% U, Q) V* v2 S (2) while <condition> loop
/ r- l7 l0 W; d/ G, `) o Z! E <statement sequence1>;3 A0 h! X3 G& ^/ p# c
end;
6 w. r, ]7 l1 g2 a; s# H% a (3) repeat
3 e9 d1 ]$ W( S+ {7 p& \ <statement sequence1>;! t' I6 J! A% _ H
until <condition>;
; N5 j; Y: U+ F* c7 X (4) for <condition> to <condition> loop
/ R/ m3 v; S0 P( A. K U0 m <statement sequence1>;: d# {, o# J9 E! _/ t& c
next;
2 C: H: L! I4 R/ c( _; }3中断语句( ~0 a0 p1 d3 r& N5 Q D
waituntil <condition> prio <integer expression>;2 [3 ~# X. Y; v' j
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3 l3 i+ Z( j; k- \' e& r" M以上为常用的函数！1 L$ \) ?' `! a; r4 D7 C, ?& b
还有很多，如有需要我把资料发到你邮箱里 9 x4 j% C7 q) ~! K2 F( i
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