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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
+ w. |9 Q' }% u3 N& U" r3 Q% E if <condition> then0 l8 T# f# r7 P% o8 b; r
<statement sequence1>;
, G8 }: v% r5 ~ elseif <condition> then3 B- H, j, R, Z! [3 e
<statement sequence2>;1 F3 \2 ?' C, F4 ?- x5 E5 C
else % g& Q& O& C0 p3 V" U, Z
<statement sequence3>;1 s. s0 u& @' X1 f
end;
& y( n( l" t- j. K2 N) W如果分支比较多，用：
. D' o, c' H5 q! ]7 P) y inspect <expression>
3 T4 l0 h/ @5 ]7 a' u* K# C, J when <constant_list> then6 R4 g4 ]( c( K; |& W" d) M7 ]
<statement sequence1>;& t5 f7 u W* e8 P
when <constant_list> then& O- V8 S z9 G+ ~- }
<statement sequence2>;: Y( Z$ I+ _" V6 n H+ z/ \: \
...
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<statement sequence3>;, N' {/ s/ y1 x3 O. z
end;" r# K0 N) U0 n: `" t2 K
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2循环语句
* c2 J4 Z( h3 s- w7 l (1) from <statement sequence1>
6 U9 L" F1 X0 b) O8 A until <condition> loop1 T. s9 g5 H; H0 R! q
<statement sequence2>;
7 a9 m7 x8 H% B end;1 F( F5 |" m# u) W
(2) while <condition> loop
. p) ~. v/ s2 f; I* @3 Z) }: O <statement sequence1>;7 E5 s, y; D& k* _
end;
6 z8 ]. I8 Y) E* X8 K (3) repeat 5 H$ W" [) k1 Z$ L& y* K- u
<statement sequence1>;) Z! ]4 f9 k3 M! g- d) W
until <condition>;$ M* y. Z) U8 P- p1 z
(4) for <condition> to <condition> loop
( e( P0 U5 D' T0 } <statement sequence1>;
2 \: I/ o' F- D0 d6 [ next;
$ \% u W. s8 A! h& n- C3中断语句
: p6 l* @8 D0 `4 @ waituntil <condition> prio <integer expression>;
/ h! `) H5 q: Q# a, G) F, z8 H+ ]/ O C, _9 R( e
' H/ l0 ^/ m) \ W I; [( @
以上为常用的函数！
' n6 H) J9 x6 P5 g3 g还有很多，如有需要我把资料发到你邮箱里 n c1 f9 r0 z* J) w& n8 f
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