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发表于 2012-11-13 08:48:12
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1判断语句& U: v' s$ e" W# @) f# d
if <condition> then- ^+ x% _3 f' e( ~; `
<statement sequence1>;
/ F* e* R t& s: |" | elseif <condition> then
1 F( b3 u1 U' Q( ^$ d4 p <statement sequence2>;
7 L0 k/ y, O2 ? else
5 B; ?8 O8 { V6 U6 O9 g' |" A <statement sequence3>;
9 Y; S# s7 V5 f end;
1 m: |/ X Y; p$ N- l1 v, g- u如果分支比较多，用：5 o) Y8 U2 \" J' O$ N0 f
inspect <expression>4 u) r+ [% p+ D) Y% u( D$ z+ X( P
when <constant_list> then
) n3 r! w* c# c" ]5 x7 _# T# y2 B <statement sequence1>;
6 h) n6 d+ m! G$ Q2 w0 y! W when <constant_list> then0 b$ `9 C' d2 A
<statement sequence2>;0 t1 S$ s# u6 Q$ Z9 h1 B$ x; R. R- s
...; I( _+ T) V1 ~( v
else$ b! N+ U4 U: n+ d2 T
<statement sequence3>;
) d& Y/ _+ G; P" Jend;
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2循环语句
0 }# X h0 w1 G0 |2 S (1) from <statement sequence1>
) A: |9 L8 B+ K0 s until <condition> loop
! F3 F/ g8 d2 R. ~' r" D0 ]4 w <statement sequence2>;/ l& I2 I( L# m. Y4 E8 `9 ?
end;! {% j* D% [, x+ H$ O2 I; O
(2) while <condition> loop
A& ^1 }* l3 Y0 |8 U( q <statement sequence1>;
' Q6 Z' y' p) y% w3 P end;' `1 [" z: T$ o
(3) repeat
" n5 g5 _! ]! S Y! o <statement sequence1>;* m2 {6 P2 q0 L+ U. P- v$ u
until <condition>;# n3 g! n3 ~- X- R
(4) for <condition> to <condition> loop! F: e- I. n7 ^& D, q7 m
<statement sequence1>;
) `' R: o7 ^+ i2 a# T; m/ f next;
0 f3 n' ~1 J* B2 [& t; Y: w3中断语句
' h, g& Q$ d1 z) Y waituntil <condition> prio <integer expression>;8 s$ L1 O' p" m2 d, g+ O- A3 f/ i2 z
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2 O1 `. ^; [3 f/ A以上为常用的函数！# C% l8 ]) C8 e3 }6 a; W
还有很多，如有需要我把资料发到你邮箱里 ; C# c' _9 [- c' s1 J
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