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发表于 2012-11-13 08:48:12
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1判断语句
# \* C( R- _2 b5 u* Q( n if <condition> then
, M4 i& _1 f9 p/ P" L8 | <statement sequence1>;
/ s) h) J: \& {, A# |( \9 ~ elseif <condition> then
9 m4 x' ?! s( H. Y' k7 Z <statement sequence2>;
1 L' z' @ L8 l7 S( x3 _% D else ! S" a5 a9 E2 F
<statement sequence3>;1 i4 I; b% w: Y: L
end;' C- N' @* d% }$ _
如果分支比较多，用：& j! t3 r8 [, _3 [6 M
inspect <expression>
- E/ j; U/ v: B. Y. u/ |1 v4 g when <constant_list> then3 p% b& X3 a- c, T) I
<statement sequence1>;
6 @5 t) h: P/ y when <constant_list> then$ b& i0 ?) B, a$ a! q/ f
<statement sequence2>;% W8 r3 ]( [8 l7 A1 i9 w& Q1 x# ~. e
...
7 H3 H$ Y3 z8 q: | else
% t% W3 T8 b! D$ `, y1 W2 ^# i% D) t <statement sequence3>;
: I7 [+ U- v: p8 r/ }; pend;! a& i- j+ W5 ~8 j4 V
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2循环语句
1 f, f. L/ ]7 Z2 d5 Z W4 F (1) from <statement sequence1>
V' A* X. H5 k. r" G/ F; b0 ~1 Q% n until <condition> loop
% S+ q! X! B t. I4 Q <statement sequence2>;
8 ~# m2 N ^: t. z4 t3 h+ C end;
% e6 m4 ]8 q0 M9 d: ~; S6 S (2) while <condition> loop
7 B' O* ?; B* y# H9 [ <statement sequence1>;$ V2 _' x( f" X
end;% b' s, \" r+ D' k$ J$ H) C. }! J
(3) repeat
, K5 G% D7 s2 h( Y <statement sequence1>;
! H) v% E& B. e4 x0 l! R until <condition>;
& V. ~; k' Y: ^. |& e( w. M (4) for <condition> to <condition> loop' q! t/ b9 L, q: j8 O/ m# V
<statement sequence1>;
6 i, W. `8 j. c8 I, r next;5 j1 b6 Z/ y U2 H+ y
3中断语句
8 X$ G) C+ o u4 M. H waituntil <condition> prio <integer expression>;2 n1 L* S5 h2 \5 H1 ~4 y& F/ {
8 L7 W7 g# H6 l' h+ w D
3 c) c' I$ z5 R( `; q6 q以上为常用的函数！5 l" ~2 }6 D, n: @- n6 C$ G( j
还有很多，如有需要我把资料发到你邮箱里
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