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发表于 2012-11-13 08:48:12
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1判断语句
+ R# ?/ O3 S9 Q* [! X if <condition> then
9 A% v( W1 k6 w9 l! i8 a <statement sequence1>;3 m* O' R& O( ]/ O
elseif <condition> then2 ~. n; i$ o& t# M
<statement sequence2>;. X+ D: l8 O6 q+ p1 I
else 8 W; S, A! w2 A, B2 a! _( A
<statement sequence3>;
$ i" y& F6 c9 K% E- k0 U end;$ s4 m; r' v- g/ u
如果分支比较多，用：9 i) m, P" X+ B: y
inspect <expression>
9 D/ m1 O2 ~3 y% a6 s5 a when <constant_list> then: e* a( S J( y! t$ b) k
<statement sequence1>;- G0 Y9 B9 _7 _9 b
when <constant_list> then. Y0 r& U! b c) q, f7 Z, v6 t
<statement sequence2>;4 `# m: q+ ?* ]1 s9 R4 T5 I4 W
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else
4 A6 b9 S, ^ [. k5 D# a8 R <statement sequence3>;
4 ^9 K5 [ L+ x8 Y7 }. U. nend;
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$ e8 j3 p& y/ o6 k3 a2循环语句
: ~+ d. T, `: ~+ U (1) from <statement sequence1>
& [, M8 w2 n' }$ [$ y& S until <condition> loop
, p: Z$ u! W, d3 k$ ]( T <statement sequence2>;. D6 W. z1 d- o
end;; ^9 [7 R; `7 w) x7 ^
(2) while <condition> loop
& y/ l' h& H9 f4 J <statement sequence1>;& j+ F, ~1 z; I4 Z6 _2 M" p, ?
end;
1 `6 l( k/ L' R$ U7 Q+ e& }+ G) h (3) repeat
; g# Q1 S7 K8 P: J* @4 }6 q& w <statement sequence1>;
3 q1 f" k0 r6 F until <condition>;, p* \9 b1 b' X6 M! n* P
(4) for <condition> to <condition> loop
" j; ]" e' M. I5 G1 g" L) t: m <statement sequence1>;
! ~& w2 s1 ?( r2 {# s$ Z next;
/ g3 d0 W( _6 _0 ~" S$ t3中断语句
: y* M, ^5 e2 J' {9 d waituntil <condition> prio <integer expression>;" a* p% F, H C; O9 h" V. v$ {
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7 x& T3 X1 S# w9 E; {) ?以上为常用的函数！
$ h* l( m5 l, L( i: q还有很多，如有需要我把资料发到你邮箱里 - Q- i W$ G9 `) e/ u' `
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