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发表于 2012-11-13 08:48:12
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1判断语句
# j! N( _9 c# U' \7 D if <condition> then4 B) Y7 @1 G! m6 v
<statement sequence1>;
/ [% F S; T* p9 @1 z elseif <condition> then( J& g" B$ Q! U1 W6 S) q
<statement sequence2>;
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<statement sequence3>;* M9 I4 W) m5 T! F, O l# l3 |
end;+ O; J7 f+ }1 S: _
如果分支比较多，用：
! j0 _3 X; C* F+ ?( z inspect <expression>; \& m1 |% h; I6 e
when <constant_list> then
% s3 X. H' v3 f/ v <statement sequence1>;
0 d* c* d2 r* l- F5 R6 X* f$ W when <constant_list> then
7 g5 J1 H1 t& Q' q; P: _9 J) ? <statement sequence2>;% E; m; k8 z" o# a2 t' D j
...
`, X/ q# E# v; X4 M else. N0 x$ r8 I/ L6 W# o$ x: [
<statement sequence3>;4 u6 e) ~) s& }! i8 k
end;
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+ C( i. b) |; U4 t$ c, J' n. n2循环语句
+ s/ H- e. O) A (1) from <statement sequence1>7 X( E& E# C! R7 b- P9 ^! A
until <condition> loop2 V2 j d/ w) j0 m1 i' D3 B( v" p7 O
<statement sequence2>;
a; i3 H7 e8 y/ s end;. y" [& N1 \7 S9 g
(2) while <condition> loop3 k0 R" y, g" A# t0 N4 J* B
<statement sequence1>;5 u, L, {$ ~' I9 ?' s9 l% z; }% b
end;! I" x# L T+ X) _4 {* p
(3) repeat . T" D o, [! ], Y2 @
<statement sequence1>;/ e' _6 g! d; ~. M# [- F
until <condition>;
b! s: d( n% V9 _4 S (4) for <condition> to <condition> loop
8 Q, U2 h0 u' M4 {$ E8 y7 j6 x" Y T <statement sequence1>; r# g4 a" h4 @3 T
next;. _6 w1 U& F3 ~) _4 U) v
3中断语句- Z( j! _5 Y2 O; S8 b6 u# E1 ^- k
waituntil <condition> prio <integer expression>;
$ [& X0 U: [$ x7 L9 k/ @" G0 q/ z* O2 Q1 {. V2 D8 a2 [3 E
. z6 s- x) {3 V8 p" o Z以上为常用的函数！, N1 [7 w4 R- B- o
还有很多，如有需要我把资料发到你邮箱里 / ~" j; O; l! M" Q: t
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