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发表于 2012-11-13 08:48:12
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1判断语句4 n7 B& x7 X4 `/ y$ y6 o9 M9 g7 Q, |
if <condition> then" m3 s: T! x9 C6 O- @, ]. I
<statement sequence1>;- [& Q, V& _' O4 J# B5 B. r) @7 {
elseif <condition> then8 q8 z3 E: W; V8 i2 T0 \% v
<statement sequence2>;0 Y+ M) F3 R" B& E5 P8 R1 [
else
9 d( Q% x/ Y4 U <statement sequence3>;
+ }" V- V8 \' L+ Q9 _ end;* w: P4 W1 c# v6 w- \+ U
如果分支比较多，用：6 \& p' l7 [( c& U# H9 j& e, S
inspect <expression>
0 k% f' c& b( C0 a( h when <constant_list> then q; u" {$ c# h; \0 B
<statement sequence1>;
: C' F, t4 K6 e' S3 O/ k) i9 ` when <constant_list> then* k! E! Y1 {; h
<statement sequence2>;3 Z A: U4 c+ q) J9 C2 T
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else
7 a8 h$ z$ n' L( d. s u <statement sequence3>;7 A/ z1 h5 G$ @/ w3 d
end; b1 S1 o8 {) T4 L- b5 ?
/ T8 e. X; l) K0 @2循环语句
/ t4 o5 C: Q' B4 l7 b* j- a (1) from <statement sequence1>* [5 g2 S' z: j8 l( V6 E
until <condition> loop
# e. K; _! m7 t) {, y <statement sequence2>;
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(2) while <condition> loop
7 X. ~' x" O* d) }# v! k <statement sequence1>;2 p( f6 o! u. W5 q/ V8 a! \2 N! h
end;
$ u. w8 c$ _! t- ~ (3) repeat 3 O/ J7 }& I4 e! ^
<statement sequence1>;
% o- ~# {* Z( C( x until <condition>;, j; \' z8 @/ O& W: `% s( h
(4) for <condition> to <condition> loop/ g9 M2 f& V9 _0 [) D$ T
<statement sequence1>;
' b6 P" B/ U0 H( P3 {7 o. F next; \ d! O9 O+ d' b3 A
3中断语句7 J3 U2 o1 k7 \
waituntil <condition> prio <integer expression>;/ Z- r- S% \% }5 N* @4 ?* v+ d
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" R, {" L6 @+ \5 t6 q以上为常用的函数！: r, Y$ y: i- {9 t- i
还有很多，如有需要我把资料发到你邮箱里 ( q$ v1 Q! @( d8 T' y$ F: E: ^
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