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发表于 2012-11-13 08:48:12
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1判断语句$ X' }' Q$ b' T }
if <condition> then
' C7 A5 v3 O, Z6 \# A <statement sequence1>;
2 g1 v& l7 b" @$ k* \4 @ elseif <condition> then! n$ ]) d1 I1 r [* \4 r
<statement sequence2>;
3 a4 g7 g7 ~8 \6 D$ N9 p0 `6 o* ]& H else & Z5 v2 ?( R' U
<statement sequence3>;
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如果分支比较多，用：
8 m0 w0 O9 g' T* j/ ~9 v# k1 |9 h3 Y inspect <expression>
2 j( Y8 H* b5 n& u% c& x when <constant_list> then
$ e, r6 L9 U1 p. `4 f5 e <statement sequence1>;: ]$ F3 u4 h- L
when <constant_list> then6 I; i1 z# Y8 f; j! l% D! {, C1 ]
<statement sequence2>;3 g7 q' _1 G; ^6 R
...
: J& a! e2 b# l$ \ else
! @9 W8 ]' i) V; e% C, P: f7 P" C$ K3 k <statement sequence3>;
# ]- ~5 d: D& p+ ^' M! @8 [# Send;
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2循环语句
& Y0 G* g F3 e- P m. M" O7 z- D (1) from <statement sequence1>. D9 t. n. u; B! @/ t; d1 O
until <condition> loop
, u4 U8 j2 f X9 Y# } G" z <statement sequence2>;
& c; C- D" ?2 Q3 k' o; { end;4 F2 B7 _! @ ?4 d: h- O
(2) while <condition> loop
) i7 r3 N1 d- C2 N <statement sequence1>;1 _5 }" q3 ]4 k7 t* m
end;
* i! k0 Z% S; i( W, l+ E (3) repeat : P1 E! k" W# |7 l7 o8 J6 e
<statement sequence1>;% ] r* }0 h8 A
until <condition>;+ P8 S. F9 P( S) d h% V
(4) for <condition> to <condition> loop
9 `* F2 L3 ]3 k, V# s <statement sequence1>;
5 l& T" A: b E. S0 i( r* n0 ^ next;4 t2 b( ~5 x2 u) x T
3中断语句
3 q7 H! z; f, ^4 P h4 ?5 F waituntil <condition> prio <integer expression>;" F0 H) \. ^9 z0 Q& D
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* f h$ z, p( c; `; \; w以上为常用的函数！
# Z3 n- l$ U, O6 Z# I- m还有很多，如有需要我把资料发到你邮箱里 0 G' X& E, C0 L- g7 p8 G
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