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发表于 2012-11-13 08:48:12
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1判断语句
* t! `& ~6 n7 H; T7 i; x if <condition> then' w; _. M9 ~# Z/ {% L
<statement sequence1>;
# ~" S! r: ?1 ]- {# s elseif <condition> then
8 Z* J) X4 s7 Q' `# V" H! | <statement sequence2>;; h) c7 Q9 a' H/ L( v8 b/ n
else
0 M5 t7 G1 n4 Q; ^# c( I) | <statement sequence3>;
1 Z" g% J- r. ~1 w$ e end;
9 N" p9 P7 C: p7 Y; K如果分支比较多，用：
/ U; ? h8 H; D5 | inspect <expression>
& G+ f* U0 F7 {2 d# f when <constant_list> then
! j2 J p6 K* a8 o+ Y a <statement sequence1>;8 m0 Z( W% `& y. k3 ?
when <constant_list> then
7 M$ v. Q5 J* [" Q3 e O, h <statement sequence2>;* H+ g) J% J7 `
...
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<statement sequence3>;
1 C( V& v3 Q4 R! R5 H# P; Xend;/ G8 H- g' z" |4 E3 q. a" O; {
9 k, s7 ?8 g# M/ q2循环语句; y9 O7 n- d- C" f' N2 w
(1) from <statement sequence1>" \7 C4 p: N% c6 j6 f; T; W
until <condition> loop1 M) S- O0 `% \& [* h9 w, W) o7 q
<statement sequence2>;( Z3 c# m4 I" f$ |# b
end;
; l( H- H3 O$ s* j (2) while <condition> loop
# }- H4 `/ n& l. Z8 x9 M <statement sequence1>;
" T6 j: E8 U8 w9 l/ v end;# _; b6 n4 g! T+ `& d- n
(3) repeat
/ e: g8 ]2 U- c. h+ j3 o4 s <statement sequence1>;
7 V O) T2 B; l" _+ v until <condition>;
" |% I, N, X0 Y, e, N; { (4) for <condition> to <condition> loop
' K+ w3 L* K% S* ~! Y( W; f/ d <statement sequence1>;
4 q" W# O" F. S# x0 y5 u$ | t! K k next;
4 U2 H0 {$ C% |, o, c3中断语句* k) \7 x ^" y( r
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
8 T8 l, O6 D6 h: }5 |8 C还有很多，如有需要我把资料发到你邮箱里 - ^$ G* Y! g! U' l) G; _; t3 y
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