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发表于 2012-11-13 08:48:12
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1判断语句
) G% R" T& @& [" ]0 k6 s+ c7 p& n |, F if <condition> then
* S: U/ p! f" G- ?+ R <statement sequence1>;
2 e& b: H! f# y/ B& B' W$ {! o elseif <condition> then
# F$ r' [9 e# G( Z <statement sequence2>;
1 B$ @: x3 f' Z6 {! p2 P else ! |* ?/ `2 I2 A( z
<statement sequence3>;7 D& m4 Q! S4 F4 `
end;+ I. N# ~, f% P. ^* S! N
如果分支比较多，用：
" y8 X X: b8 \" q( P* M4 O/ t" ` inspect <expression>& O4 f3 Y$ q- u5 p! g& E3 N4 B
when <constant_list> then
. Z8 J' y* I( @. V5 h <statement sequence1>;
2 C( L: C2 U9 q! w& ]' D when <constant_list> then
, \) ~1 c- }9 w0 q+ t% c <statement sequence2>;
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else
! T3 {7 x# F M/ m <statement sequence3>;: O$ v- T- U/ s$ W) z$ y8 D8 C$ q, r
end;
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2循环语句 B1 T- X* m: W4 N
(1) from <statement sequence1>$ d( Y, R! g' `- S0 v
until <condition> loop
! v; L7 N/ G% F t& ` <statement sequence2>;
- k. X3 G* ]" m, V end;
# }3 i/ X; l! n9 S Y8 [ (2) while <condition> loop6 k1 Y1 G6 R5 y# q0 B: F7 i4 L
<statement sequence1>;
1 d4 a. {' P2 k4 g" { end;0 q, ~- i! c# V* v+ X7 a
(3) repeat ( {2 t3 |4 c- v4 I% h' I& K6 R$ X, |
<statement sequence1>;4 ?$ q; K( r8 s0 I- C
until <condition>;/ m o! n. G9 u7 ^+ p: {9 o
(4) for <condition> to <condition> loop l! L/ D$ M' u: e, w
<statement sequence1>;# ]1 r6 ]; H$ I* ]$ I+ S- [# k
next; A) {. G2 c" j/ P9 w: A
3中断语句
+ n" J; o0 R: Z' |! j waituntil <condition> prio <integer expression>;3 q/ l' n$ e- p* g n& s
# K1 M2 \& d' K+ y$ |5 O$ ~$ ~
5 b: U( U& Z6 ^$ z; W以上为常用的函数！
# \5 y$ V6 n4 v$ @还有很多，如有需要我把资料发到你邮箱里 % y& I w0 J8 `0 [1 y1 t- M; y
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