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发表于 2012-11-13 08:48:12
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1判断语句. C/ b/ y2 Y; W
if <condition> then6 q: p7 P, j& @: l
<statement sequence1>;
4 j. I$ _4 L) \ l8 u elseif <condition> then
( U; K; ?! m4 z8 W" l <statement sequence2>;& x$ t5 j: v% v) U$ Y* t
else 4 {! h" n% U8 s& E5 X
<statement sequence3>;
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如果分支比较多，用：
9 b7 P" C8 m5 @! W% Y inspect <expression>
' |3 O1 t- T L- f0 i2 T when <constant_list> then
0 J! o1 t& a1 g9 y1 Z <statement sequence1>;: c! s, ^1 X/ ^$ [7 \" F3 ~
when <constant_list> then0 o; w- B2 L/ g7 `) R7 E3 E
<statement sequence2>;
+ y6 }* j! O' J3 o. a$ i; N ...
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<statement sequence3>;
9 v) O$ U D, J& u+ l! x! dend;
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+ n) T4 ^+ n* m* U/ ?' y0 H2 S l- }" b2 C2循环语句# o/ a# {: y5 Q5 K
(1) from <statement sequence1>
/ W+ s$ h. Z+ Z; y7 R, [8 u( x. D h until <condition> loop
6 `" ]# Y+ m# o3 s" {/ j% ` <statement sequence2>;
4 P) _2 Q. ]; i/ r! Z end;
: B$ p: w3 c, V$ v% c, { (2) while <condition> loop
4 F7 E* n0 \- }, i$ x$ L7 S <statement sequence1>;
3 [* F9 c# W. \ end;
( u* P5 r4 \( O) H1 D, b7 P' { (3) repeat - F) M/ j6 m1 e6 }3 E6 S% V
<statement sequence1>;$ ~) }- n9 r/ ]7 i: z& b
until <condition>;% s4 g) H2 i4 Y5 d# @
(4) for <condition> to <condition> loop& O" I3 u, L* E5 I4 W
<statement sequence1>;
" ^' K( e( w, ^# \% s6 i next;1 ^- s* o0 I6 I# e. W; O( b
3中断语句' L( ~& G+ R$ ^# V6 K+ `4 H1 S( A
waituntil <condition> prio <integer expression>;8 {3 f/ f" o, e* y4 k2 E0 m
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% P8 B6 v# r1 R6 n以上为常用的函数！ H2 L/ _( r7 o, L$ S; N
还有很多，如有需要我把资料发到你邮箱里 0 \- J% [" W; L0 ] P2 i) U! V
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