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发表于 2012-11-13 08:48:12
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1判断语句; n9 Q1 s: d1 q$ c
if <condition> then
. s( n& U# X; t <statement sequence1>;
% Z, ^& K |& p0 O elseif <condition> then
& O9 {) U/ j2 R* _7 H6 ^& b <statement sequence2>;
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<statement sequence3>;
, _5 B2 Z9 |5 m7 G1 Z: s6 C4 k& E end;
7 ~/ X0 A, B, p+ _( z. F3 Y5 N如果分支比较多，用：
( i0 e/ k$ b0 _. Q( z( O inspect <expression>
( X8 S( ~5 w0 i3 T; B/ ?! |9 b when <constant_list> then; `* t) d$ {! @" z
<statement sequence1>;
+ G" S3 D) R [+ q9 m; C when <constant_list> then5 B& B7 O- p# H; b7 I* w+ u: @
<statement sequence2>;* D. ^: s4 o& b$ O9 N! ?1 L
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else
5 v: ]& k2 r; w; k# v% [& } <statement sequence3>;
# i! L1 a5 p3 K; k9 u- q' l& Pend;0 s2 h4 n$ o, P, }' X# N
# R% B+ q0 f- }" l2循环语句( ^+ Q) _4 }9 W- R- D- I5 \
(1) from <statement sequence1>
' a Z, H8 M* f- {2 T' C5 M until <condition> loop! P/ _8 `: @' y0 x, }# _# C7 r
<statement sequence2>;
3 A: I% |& w- x) f0 G- X end;# T1 A+ }3 B: f/ G3 p
(2) while <condition> loop
5 j0 A( m9 @+ t* ]* B <statement sequence1>;( l* _' s4 V9 T5 q/ j6 x, ?
end;+ o1 S+ X, b* ]
(3) repeat ) {, s. n8 t- P3 @$ E
<statement sequence1>;
9 \* a; Z) c9 i- i9 \2 J+ Z1 Y# N; X6 D6 a until <condition>;- B& ]# l7 O3 y0 H% i1 u5 R
(4) for <condition> to <condition> loop
, q4 i# i0 H3 A, |* q <statement sequence1>;
* |! h, U1 J* J0 l/ \- \9 i next;
1 ~2 N* [2 Q( U) p5 j3中断语句$ C& c1 ?. h1 d& Z( U& c7 x/ R
waituntil <condition> prio <integer expression>;
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1 m4 L% y; Y( `以上为常用的函数！
2 [1 h( X# C7 z* X3 o/ O% C# G还有很多，如有需要我把资料发到你邮箱里 9 h* M3 J3 S, Z& X& G4 f
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