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发表于 2012-11-13 08:48:12
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1判断语句! V: ~. R9 u6 W6 N3 J3 y" x& r, ` W
if <condition> then
% N: f9 q! a0 j: R) {2 T <statement sequence1>;. e2 R5 U8 p0 @( v
elseif <condition> then$ G; i, k) F5 M& `: s1 Z; ^
<statement sequence2>;
! y' I1 u! s0 D! j! a \) C. s7 x else
9 B9 z: M7 _' g) Q <statement sequence3>;
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如果分支比较多，用：
- W, ]! t9 B) ? inspect <expression>
$ ?3 n) O3 ~) ?( b$ p when <constant_list> then
8 @; T1 u) O1 P <statement sequence1>;
& r; u+ }4 Y. \% d1 `9 o when <constant_list> then
/ R9 D' T \" J( F) \6 u. B <statement sequence2>;# V: J5 [: j, c A& e( G; n
...( `5 Z+ S$ M9 y; r- W" b
else
- t: N* z) j% v2 J0 r* ^ <statement sequence3>;0 J% @( G4 \: t* _* s0 @
end;0 h7 v3 U& j. P& v2 z2 x( Z
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2循环语句
( ]8 X6 N# F- }. V( z: @. P (1) from <statement sequence1>% @1 w: J5 Y! ]2 j: P0 G1 ]
until <condition> loop
9 i5 F ?0 L/ X3 _- k <statement sequence2>;5 h9 J6 ? V% E
end;+ d. @1 B) T5 {7 @( t8 ?" t J* E
(2) while <condition> loop
5 Z% n- @4 B/ d% ^' X. {5 E <statement sequence1>;
$ S8 u6 z4 K7 i( Q0 l4 r end;9 u# B' Z1 O3 Z+ E, n7 J. e4 w
(3) repeat & E9 \" R+ y& @
<statement sequence1>;1 f- ~3 v! w0 J \6 o' Z
until <condition>;
% g0 I: G7 o, h, } v0 C (4) for <condition> to <condition> loop
. o$ P" J5 i8 n8 o <statement sequence1>;* {8 g! p9 h0 D; x$ S @" ]
next;
# O; V) w, A, Y) J3中断语句
; U& T* T! |! v0 ^' O waituntil <condition> prio <integer expression>;
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以上为常用的函数！
) T' `, O3 Y8 u. @: h1 n/ J还有很多，如有需要我把资料发到你邮箱里
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