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发表于 2012-11-13 08:48:12
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1判断语句
' ~* X* _$ b& B& M5 F* l if <condition> then
8 y% F1 b% U2 l) o' c <statement sequence1>;
/ H4 Z- G* H( I. m2 m elseif <condition> then
7 l* p# f% M, }- J, X- z m <statement sequence2>;9 I! w# p( F: H) B% O
else ! Y- |% v: c/ }/ D$ r* M* Q' ~; ^
<statement sequence3>;5 U F6 X( b$ D4 H8 y# \ r+ M/ _' T. u
end;8 `# I/ e* `9 Y
如果分支比较多，用：
: h0 W( W( N4 p( W/ ]; ]& Q inspect <expression>
3 |9 U0 z$ S$ @# J when <constant_list> then% U0 W! E' W& j5 e; o" x
<statement sequence1>;
# F0 p; A/ R7 Y2 A when <constant_list> then3 a E+ K" |/ u6 O: Y" y4 z
<statement sequence2>;, T( t3 a9 b5 n: ?, y* J
...- F1 [: K. }8 ^
else2 x( s8 ~5 H! `9 Z2 R3 v; \
<statement sequence3>;2 S9 C3 Q! _; q! C0 K" O! E: s
end;1 W8 i' x9 l* L M9 z+ i% b" c
3 ?2 ~7 j& G& z: e, _( z2循环语句
/ E' t/ F1 |9 p3 g! m) L (1) from <statement sequence1>
4 g( O( ]2 j# t until <condition> loop3 H- Z; e2 m4 h* b2 H
<statement sequence2>;" O4 S0 v& ]7 e: o' m
end;
$ F* q3 u* I* }, x6 J3 s; X (2) while <condition> loop- i1 b, s+ Q: {' z4 V/ m
<statement sequence1>;
; E: V' i) w+ u2 h end;
1 B4 |& Y* Y! Y (3) repeat $ q7 ^" C: W, v% Q z/ Y
<statement sequence1>;2 I' B$ r' E& M: H% x: L
until <condition>;9 ^, Y* `6 P9 x$ W; _
(4) for <condition> to <condition> loop0 M' x7 `' m) y* ^ S
<statement sequence1>;# @5 _: z0 C* I2 X& L* j9 O
next;* E) S0 P6 T* ~
3中断语句
0 I9 V5 z2 V. {4 M; n waituntil <condition> prio <integer expression>;/ x% Y- {4 Z+ r j# u& d$ j
5 [, ]$ e* c2 r3 q+ ~( \- @) W" X+ N) v2 h3 k% \
以上为常用的函数！
2 p+ k, v, F1 y. f4 {还有很多，如有需要我把资料发到你邮箱里
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