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发表于 2012-11-13 08:48:12
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1判断语句
1 i' e& E. ]9 P. i9 j& B, n0 o; X if <condition> then
" B4 {: b* j6 @ G/ [: P; ?& [; F <statement sequence1>;
4 N4 n5 u8 q: W( o+ x elseif <condition> then5 S7 W5 B3 S5 S4 i1 U( Q: Y1 z
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：% y/ v2 p$ L. |0 o, g0 I
inspect <expression>
9 f2 u; T" g6 |" z0 ~' i- p& E when <constant_list> then; M4 e( O7 U T
<statement sequence1>;
3 i) ]% w; x( o' m when <constant_list> then4 |! k, P! ?% T/ y1 i8 ]# X
<statement sequence2>;
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else# L5 w* C1 C* P; D7 I: b
<statement sequence3>;
$ D" L2 Q; D9 W" i/ L- V wend;7 \/ p; Y, T( U) S
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2循环语句
9 [/ X; r# M1 z. p (1) from <statement sequence1>
: o7 b: r: V( I" N until <condition> loop# L; e9 _0 M \* D2 L) H/ T
<statement sequence2>;9 Q( J1 A I3 b2 ]
end;" X8 W g; I% B/ n
(2) while <condition> loop
" l: s6 @/ Y) k8 L V <statement sequence1>;
) Q f: }: u0 s- P0 c7 }; i7 C end;
( {, l2 `8 J' d2 W3 H6 U; W (3) repeat 6 ^9 x( s4 a$ Z% k
<statement sequence1>; L4 O& j3 e% R# K5 B! o
until <condition>;
4 N# s+ D/ n7 _- _) ]( l* l (4) for <condition> to <condition> loop
; m/ ^/ Y* H: t! C <statement sequence1>;5 r+ l* k- V$ @0 a1 Q8 m. Z7 X1 \
next;5 |2 T: |% k3 e/ ]
3中断语句1 r: ?) P F6 ~2 n
waituntil <condition> prio <integer expression>;9 B- c4 L/ i& i4 Y
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以上为常用的函数！
! ?( O0 y& a+ H还有很多，如有需要我把资料发到你邮箱里 ! d) A' h/ [2 t9 G/ O' d5 Q8 R5 J
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