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发表于 2012-11-13 08:48:12
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1判断语句5 T+ z8 p$ |3 H) H& K9 F) D( D
if <condition> then2 n0 K6 d" ` u, f% a9 a
<statement sequence1>;
* D/ U) F! ^2 V% V elseif <condition> then% `! @/ G2 q. }2 p# q; T% z/ u4 M
<statement sequence2>;" F; K# H# V( d0 a: g6 G# I
else % k' K+ Z2 L: y+ B
<statement sequence3>;
' i' D$ h5 O) P4 I1 j. T* S9 o; F end;
/ N: i' B+ e% e, {( U& d0 h如果分支比较多，用：- @- `9 W2 Q0 d9 K( }) C8 y* Q6 d- @
inspect <expression>
* T v6 ?( n- t% T9 E% o3 w when <constant_list> then7 j0 r- T [0 w% f
<statement sequence1>;( [' q. q6 L( a' g/ h( Q4 z0 {0 y& l
when <constant_list> then
0 O+ a: U" P" l1 ]( v5 u1 ^ <statement sequence2>;
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else; _! e) N3 }$ a# R, m- g @% }1 `
<statement sequence3>;4 s0 A- u8 `- E/ F/ b
end;7 w+ M0 v( ?% S. R
, q- t( ?& d4 g2循环语句" A! Q5 b& l) H8 L
(1) from <statement sequence1>$ ?" Z3 M( j4 d% R
until <condition> loop
1 a7 t" s& o0 D% W0 q0 A/ c# T7 Y <statement sequence2>;
: ^# R7 [, W- O! B end;
# S" C& o* v" P. @ P q (2) while <condition> loop' }; ^( t$ {9 f
<statement sequence1>;0 }" p6 T" N1 E) R, Q
end;
! ^- |1 x- Q4 t- b1 u (3) repeat 7 ?) Z$ M/ z' C ]& P% S; z
<statement sequence1>;/ _: L! e& s& G- G
until <condition>;8 _. R5 o+ k; S. R$ p# d
(4) for <condition> to <condition> loop$ q0 {) B! ?, \. R
<statement sequence1>;
7 l) @" z c9 Y7 B next;8 o _6 f0 p( A/ K9 C
3中断语句
" d$ j( @* o+ A% K* k" e4 g waituntil <condition> prio <integer expression>;% ?& A# Z: D& T
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以上为常用的函数！
7 E) \. T( a7 t0 c0 @还有很多，如有需要我把资料发到你邮箱里 , v! n8 W& X9 h# F% L6 F2 M; @
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