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发表于 2012-11-13 08:48:12
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1判断语句
1 I! { [1 p8 Y% F$ v if <condition> then
# p R+ n2 {" p" f. t5 N8 T" l+ }0 r <statement sequence1>;+ _# I1 `% _& q! P0 i
elseif <condition> then
! e7 o2 |4 E% |. p& q3 F% F <statement sequence2>;
- g& n. N' y) Y* t3 }2 z0 n else
) v" H1 S0 F. L L, Z2 T <statement sequence3>;
9 |( x6 F v) }: c: o* Q end;. U! o0 o8 V+ T" s Y+ k) Z' D
如果分支比较多，用：
1 v9 r! N! i9 w: e3 A: s inspect <expression>% i& s4 h6 V6 U# F* X
when <constant_list> then) M& L _' K# T
<statement sequence1>;) c! X9 L" o/ a. M- F+ l- s
when <constant_list> then
4 [; }3 b* E4 ~# `* g <statement sequence2>;9 }, y m& e4 t( l o
...
9 e; ~, Z0 }3 j, A( a% y else/ j& b$ |2 j: I' K k6 I
<statement sequence3>;4 F- ]- r" z3 z0 M3 P! ~
end;
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+ V! d. l6 k. p. y, x! D2循环语句$ x6 @( e* n$ G5 `, y
(1) from <statement sequence1>& [1 \/ `; W3 L! q" ^7 y* i
until <condition> loop
0 w# C) s* w9 V d% w7 Q <statement sequence2>;
0 }8 `1 m& `8 y7 d end; s# W0 n7 T. s f
(2) while <condition> loop
5 x5 c4 Q+ V! p" M) q <statement sequence1>;- t, i! }2 L% P1 P E# ?" w
end;( Z3 J, d! ]" x* ^# q* l& M
(3) repeat 2 @" z- s9 n; }7 H, w: W- n2 p
<statement sequence1>;
6 c( O* {2 Q, n$ U8 `) A8 y until <condition>;8 \5 Y5 }* @4 I% X# q) c0 v# P1 \- F
(4) for <condition> to <condition> loop
, N: }2 C3 g9 S$ \" V <statement sequence1>;8 a# c* Q, | y6 W1 l
next;
" Z, F, s; a0 p+ d' ^$ |# s3中断语句
+ C h8 M) n& B4 Q waituntil <condition> prio <integer expression>;& a: L# {3 \# m2 X: E
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以上为常用的函数！
. c8 r# P( {7 l! B5 |! n还有很多，如有需要我把资料发到你邮箱里
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