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发表于 2012-11-13 08:48:12
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1判断语句% ^% C0 ~7 S+ C/ z
if <condition> then5 r3 q$ c! n p
<statement sequence1>;% b2 G5 C# W2 u r/ ~1 I
elseif <condition> then. ]7 S- L! v8 \+ m+ [: ~' o% N
<statement sequence2>;. m5 i5 k. \& y& ]) X1 ^5 t8 D
else
3 r- C6 a; R) c9 U! ]# O Z <statement sequence3>;
" h; L. \6 U' Z' t' x' |: g end;
h& B) T3 s: o. W+ b& @: t如果分支比较多，用：
, x3 M' K. b0 S u* P4 N1 X( ] inspect <expression>
/ w) a6 c* A2 D# ? when <constant_list> then( V+ k9 E+ \1 E4 ]( s
<statement sequence1>;
1 m0 L2 S+ I# _# C$ D3 | when <constant_list> then8 }2 L2 x& i' a. X* O6 Q. f
<statement sequence2>;! d! T& A5 W0 b; F0 `* n
...
" g. N) ~( _4 |, G. u' W else
, d' r- F" s# N8 v# m3 P <statement sequence3>;% F2 I) ]) X N+ b8 a
end;6 L- F H0 m1 n# F- e. y# a; ^
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2循环语句, X6 ~5 T* J, n+ J8 i0 T C3 I2 c
(1) from <statement sequence1>
# i% j. L9 p8 h, S until <condition> loop
# ~% [) d4 y" |: H. O" }. t _0 H <statement sequence2>;3 N( p/ H: |0 T: J! K6 x
end;$ |* N2 e. {" M' w( j1 e
(2) while <condition> loop e7 c: z. N% M. s5 a. P
<statement sequence1>;
& Y v n9 D' {, j7 w/ f8 M end;8 a8 V* ]$ M$ [' T" K4 f U
(3) repeat
: A, O/ J2 H# _ d <statement sequence1>;
8 U0 \2 l) S( Q# C until <condition>; y- j! B0 `9 @6 ]8 T* b
(4) for <condition> to <condition> loop9 c, j' ]8 z7 E' F' k- Z
<statement sequence1>;
/ m) Y! i* B! o6 E& Q" l next;8 s! J/ A T; A& F9 n. L' G! i
3中断语句2 j- J i4 f2 P6 Y# e
waituntil <condition> prio <integer expression>;- T' w& O" W. q! I$ b
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以上为常用的函数！
: M; S) W( i2 ?还有很多，如有需要我把资料发到你邮箱里 8 S! ]* |3 z; H
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