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发表于 2012-11-13 08:48:12
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1判断语句$ o7 c; x9 i2 | Q' \" E
if <condition> then7 Q- T3 L' e3 J( e
<statement sequence1>;
) {0 }8 \8 y$ L elseif <condition> then% O& v4 V6 V+ z% h
<statement sequence2>;
1 |+ _. s3 k j; L else
4 g9 W* h! f; g! R; w9 r <statement sequence3>;
7 U# \! \! C! `7 |* G5 `0 N end;
3 X q% v" M4 V* }如果分支比较多，用：
$ ~4 Z8 y3 t1 | m& T inspect <expression>
$ @( q- m% o* u" o1 w: e, w when <constant_list> then+ K+ _) L4 g: ?9 a1 E8 {+ `
<statement sequence1>;
& C5 w O8 w8 J; l9 Z" D' y when <constant_list> then6 o+ e" v( Y) d7 _! f% K
<statement sequence2>;% [8 O; n4 k: Y& A9 [4 x/ ]
...
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<statement sequence3>;. ]# B5 z% M H- t: j8 a
end;
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2循环语句
% q; m L; x( l+ G1 H (1) from <statement sequence1>
6 {8 O' P7 }0 t+ W/ i$ `& t: r% ~; _ until <condition> loop# H4 H& N# a k3 _) r
<statement sequence2>;
1 ^, j! J3 v3 C end;
% { d7 X, y/ R% [ (2) while <condition> loop
/ ?# A3 l% X& F$ l <statement sequence1>;
% ]0 x, n6 ~, p4 I8 a end;
! j& E2 x# ]( j7 h9 O9 }; m (3) repeat
: a. B% V7 q' ?9 y <statement sequence1>;8 S7 ]5 Q3 k6 ^
until <condition>;
! L, ~- L6 |* M: D9 F& @0 O (4) for <condition> to <condition> loop
3 h. o1 W/ L. `5 e/ E- ?7 z <statement sequence1>;- s$ x( v, k- G( s( \
next;, i+ b% \2 X e
3中断语句9 g! B: b; C9 B$ u& L! P" J1 Q. k
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
) ~! E) j! ]( J& X- J% u还有很多，如有需要我把资料发到你邮箱里 ) H7 a/ v, _/ @3 `7 C5 p N; x
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