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发表于 2012-11-13 08:48:12
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1判断语句
& p- }" c* J L, E/ \7 U5 ? if <condition> then# P9 t" m3 W/ m$ }* }
<statement sequence1>;
& T# u: Q7 v7 S3 \. N4 t elseif <condition> then
& M' n4 W: p5 y7 u1 N- ~- _- s0 {/ y <statement sequence2>;6 C% B7 |, z" x7 N$ L4 ~
else - W0 A% q [3 Y" V/ v+ O
<statement sequence3>;3 d E! G. E* N6 |5 n; W0 O
end;
- B( x$ N8 g! [( m$ q如果分支比较多，用：% L }0 I6 C1 j. L3 F
inspect <expression>
! f$ R8 R+ C; [( }! x* G/ A when <constant_list> then6 ~( Z4 \( k' A& B
<statement sequence1>;
3 a U1 y1 }5 P* | when <constant_list> then
, K$ q, O/ v- i <statement sequence2>;+ u' I& S3 F. P* n# J3 _9 l6 N
...- \" V) S/ G: H, V
else
$ N( n s5 k6 S# W, ` <statement sequence3>;- l* l, h6 ?, S' g; L! M$ e
end;
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) @, R" \. S0 S! V# v2循环语句
, l4 L! r% \' I: ` D" u O (1) from <statement sequence1>9 p( u! |7 l7 x
until <condition> loop
$ h4 I: ~) W7 z+ @' ?% [ <statement sequence2>;
& a c9 W+ I* s C; K5 \" `5 J end;
9 ^0 f; Z' }( K (2) while <condition> loop
. h" v9 I* s0 C! H' r7 E <statement sequence1>;; W6 A- O7 ~9 o) O& E; h/ i
end;
# O$ Z6 z( r2 Z2 Z C5 W* D (3) repeat
3 x: ^+ O! n9 b* g8 z2 p <statement sequence1>;
. c3 r% a! H( ^4 M" i until <condition>;
; b f/ p, e. m, i (4) for <condition> to <condition> loop9 X. X2 `3 n6 R3 ~4 ?; Q) X% _
<statement sequence1>; V8 e2 m; r$ A& a/ F2 t8 |
next;
$ Q- w# Z5 j. K0 E7 b8 W0 f3中断语句
9 v8 ~9 ^- J# h+ G4 X4 K; p waituntil <condition> prio <integer expression>; b$ b1 m3 H. U3 c; F
: [8 v- u4 K" c D/ y0 h3 U( \
8 `3 Z% f9 G( O! b4 ~' ^& ]5 y
以上为常用的函数！
/ Y8 d! y, c! g2 ~还有很多，如有需要我把资料发到你邮箱里 ; j9 k+ @* l3 a; }' X9 r$ W. }* A
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