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发表于 2012-11-13 08:48:12
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1判断语句9 N% u7 o7 l9 Y6 K. }: s) s# Q
if <condition> then0 `8 o2 A6 a; o( n3 B' J
<statement sequence1>;5 ]4 A' \+ h- }( [3 b% S D( ~
elseif <condition> then* l+ Z- e- k( p1 ^$ p, r
<statement sequence2>;9 h, I4 J# A& Q* t1 E
else
I4 P7 X, J1 p( F+ ~( p <statement sequence3>;3 C3 F) ~1 ^: N0 d
end;
6 F& P# g! C: q" Y如果分支比较多，用：' g4 z1 t' R( t" N. Q! L
inspect <expression>
6 z1 ~, G5 @, J. s" _+ V4 m0 n when <constant_list> then, i& F* o! K4 P3 Z1 U
<statement sequence1>;
- L& o* Z: `( s2 g7 | when <constant_list> then
6 ^" U! ?1 s$ n. o. N <statement sequence2>;6 c% N+ x/ V% r8 s. K. Q: m
...
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<statement sequence3>;, t% c, U9 q! r! r4 W, C
end;# ^- T7 T% X9 R1 k- o0 U5 @5 x! ~
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2循环语句
) E2 \0 g; D4 m1 N (1) from <statement sequence1>
! C7 V0 ~) n6 p4 a until <condition> loop
u4 x( t N4 Q: Y0 {8 U <statement sequence2>;
3 Y* d* k3 h0 r, F4 |% q end;
6 T! i1 d9 z8 H1 o& Q0 a (2) while <condition> loop5 l; |- f$ D3 y; M3 u+ E
<statement sequence1>;0 N7 Y% p |6 F2 q7 {
end;
, `2 y+ `6 M+ i+ |3 {1 {6 o1 g$ Q9 S (3) repeat 8 _& B1 m6 S# H# {+ p. k
<statement sequence1>;9 I& M+ E u# s$ u% x6 ]# H# e& B
until <condition>;) V- G) Y, M1 K' S
(4) for <condition> to <condition> loop
& j6 p0 {1 p2 K7 ? T; `" E <statement sequence1>;1 p- F8 p( C k$ H
next;
/ \1 }* q* k$ M# T1 B- ?3中断语句
/ A: e4 R' r {& i- y waituntil <condition> prio <integer expression>;
/ ^3 V, @; p3 `9 T! k0 I" s
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以上为常用的函数！
/ O$ C+ x/ Z: N& b2 M5 P" b9 w5 `还有很多，如有需要我把资料发到你邮箱里 8 J1 F' |3 R8 ~' [4 p- C
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