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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7 {, c. }( g: N* N1 p* I7 o
if <condition> then
. V( v9 j8 F0 A2 C) }. W; W <statement sequence1>;
/ Z4 {7 P% o: k: I elseif <condition> then
4 z5 h, Q% E1 v& x; @' _ <statement sequence2>;& g: M+ h7 @8 p. p( C7 J! ]* L
else 3 r) k3 t8 h& e* K- R
<statement sequence3>;% ?% V9 R9 }/ J& X/ r: Y* P& s
end;$ p( n- `4 J- V' W- \: t0 j/ \
如果分支比较多，用：' m& u# n5 ^; h; f4 N
inspect <expression>9 J" \3 i( [( q2 H4 n
when <constant_list> then
% C" O4 d5 q$ Y/ o; Q0 a- H( Q; I <statement sequence1>;7 u$ d1 @" F' a5 R" ^+ R+ W, w. ]# e; q
when <constant_list> then2 O* u: n* w1 n* p
<statement sequence2>;
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else
o# q2 M# w' c/ B <statement sequence3>;1 Q9 J, s- v' O$ e
end;
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( O- l; j# t- d l' w! C/ N2循环语句
" m& C2 q2 W& M* J5 t! F5 O (1) from <statement sequence1>- d+ O+ t2 }8 |" A! ]5 A" {
until <condition> loop
! j) E& q! K( v( O$ ~ <statement sequence2>;/ s( g( q+ U( p1 C
end;6 y, H0 T+ ^6 [5 k
(2) while <condition> loop2 s' |8 g4 S" L; c
<statement sequence1>;
1 \* g3 ~: o( g1 c/ G. H end;
1 W$ k; f6 }2 q0 r0 O( K" j: T( y3 U (3) repeat - s+ c; H4 I/ }. t: w8 i- U3 a
<statement sequence1>;+ J4 q+ H& z; E: _6 N) E
until <condition>;* I. V- s# i0 w+ n1 w0 i
(4) for <condition> to <condition> loop, }' r! W0 I) h, P
<statement sequence1>;4 _2 X* a1 @" o0 ]9 H, B
next;+ L* [3 q- X( Y" q }' M6 f
3中断语句
. P p$ U- [* b e2 Y6 r5 |5 p/ A waituntil <condition> prio <integer expression>;8 m- O U$ O& `9 Q
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) g+ R: V4 p7 \1 C% l$ R/ f! p以上为常用的函数！" [9 n/ \& j4 ]! G
还有很多，如有需要我把资料发到你邮箱里
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