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发表于 2012-11-13 08:48:12
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1判断语句
, d% B& e/ H/ A0 v- n# m1 ~" A if <condition> then# Z4 e* l. @' C) Z
<statement sequence1>;* ~) J q& Y& e5 J
elseif <condition> then
n. W8 o i1 ~# f& O6 [; y& M- E <statement sequence2>;
e. Z- i1 N6 `6 ^( j% E else 2 u3 J7 B, [9 e% H; b; d% {
<statement sequence3>;: H# [& q2 u) ~; {" @9 A. L3 c
end;
! n3 q0 U) N' S如果分支比较多，用：7 T( K9 N5 A* F2 {8 P- E' b
inspect <expression>
: I& @/ F! j1 d9 _2 `" x# l when <constant_list> then
, `! p. G. P+ m" a E <statement sequence1>;+ ` v! z( l. d3 ~" a( i
when <constant_list> then5 t! ~+ N9 V. U" J
<statement sequence2>;
' }: g1 e! d N- C ...
! o' y2 O; G9 c8 x& j else: a6 k4 j! X+ }5 U
<statement sequence3>;% i5 m% C) g6 X: W) C( [4 ^! j9 K, Z
end;
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' N+ Q+ b: d" t6 F$ O6 o2循环语句
1 Z8 U- U/ T0 ^; H (1) from <statement sequence1>1 o8 E" w: y) ^3 I
until <condition> loop
, ?- w9 X2 M& D: V( Z ^+ u <statement sequence2>;
1 }- b, I( L9 L# t R end;* E% c& b$ ^2 b* \* I0 `
(2) while <condition> loop. A' W3 K, J- ]. m, u) ~- F
<statement sequence1>;
& S! n- `1 B, |4 M end; G9 Z* T" f4 Z' |9 _! i
(3) repeat
) e1 G- M% F6 m* C, i <statement sequence1>;
" v1 T: J% f9 F5 f- R until <condition>;" C& g2 g6 S7 b
(4) for <condition> to <condition> loop
_6 D- [8 D! w) L k <statement sequence1>;; j' w9 R5 a0 E. y
next;
9 g) S; ^4 v8 H2 ?; H# w1 G3中断语句
# m9 c2 t' o+ F waituntil <condition> prio <integer expression>;
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8 h: c2 u# I' K8 S* j1 c: V/ @
以上为常用的函数！
' O F: ]( n' a还有很多，如有需要我把资料发到你邮箱里 2 n3 ^0 P8 T/ E( H
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