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发表于 2012-11-13 08:48:12
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1判断语句
2 z W: x9 G! m5 N9 S if <condition> then, b3 y6 k0 p+ u. Q/ C
<statement sequence1>;9 h- N3 Y# c$ R& }1 g- y2 k# g
elseif <condition> then. V$ p# o* r8 P8 ?. d
<statement sequence2>;
5 ^+ p* w+ u, [/ _: ^+ H( K- E+ x else " Y+ q. ^$ ?$ P
<statement sequence3>;
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如果分支比较多，用：
% k5 P6 C; F+ ~9 x inspect <expression>7 W) S) x3 l# f3 L
when <constant_list> then% r# v( s) e# ^5 W
<statement sequence1>;: Y2 w1 Q5 X5 a, Y, x
when <constant_list> then
) E2 P( d: h% e8 I$ Q <statement sequence2>;
( h: K x' {5 Y, [( d8 S$ Y8 @& x ...
' S: o, e: @* G; s- A' w$ W else
" U" N4 r- z5 f/ K) {# Q7 ^ <statement sequence3>;8 w3 U! N& ^' j) J* y; T+ L" P& W0 G
end;
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$ B7 l. E# N% D2循环语句% O( W1 q( x `5 c
(1) from <statement sequence1>" C3 j/ Y# |1 v* W
until <condition> loop
, f. s5 C; k+ t" K <statement sequence2>;
5 s7 L9 H4 ^% L& c5 Z end; g" P$ A& l8 L
(2) while <condition> loop- B* Z5 \" g( I0 @+ I$ \* g
<statement sequence1>;
; [" h+ g: d- O( N, w end;
7 G3 {) @/ a# n6 z (3) repeat
9 q4 f! k8 d8 @/ u; j0 s, r <statement sequence1>;7 Q s( D/ M& F# G5 C6 v/ j
until <condition>;* T( i6 E6 A& | o% W7 n& T! M
(4) for <condition> to <condition> loop
2 \5 R1 f; N) R <statement sequence1>;+ e) ^4 m# w" I$ j+ ^: J; X' B/ U! M
next;
9 Q8 ?, {* U# d2 N3中断语句
! |. S& {) g. A5 W0 k8 |/ S waituntil <condition> prio <integer expression>; o- G- N# n3 K& o$ B
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以上为常用的函数！$ v0 j* Z7 G& [2 b
还有很多，如有需要我把资料发到你邮箱里
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