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发表于 2012-11-13 08:48:12
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1判断语句
) E& W1 K1 P5 Q4 k if <condition> then/ P: Z4 n4 T. g7 k t8 y& M
<statement sequence1>;4 [ I7 S/ J4 {' i! |
elseif <condition> then
% m. w" i0 @, q1 ]: E <statement sequence2>;( w/ o% X }" }
else & L, U% z* ~, ^3 r: \1 m. K/ Y
<statement sequence3>;0 B7 K6 E' F; n: N& t; k
end;- l& _! H1 n# Q8 N
如果分支比较多，用：
" o; j: N5 I2 V) t inspect <expression>
. V/ x2 \2 F" B3 q) W/ _ when <constant_list> then3 K8 ~: O6 a! F+ n
<statement sequence1>;
2 i; B" r1 M' z) m, W2 v! ^! c when <constant_list> then
; ^7 F% B' V) E8 C5 J <statement sequence2>;
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else
: g6 v5 A+ I) k1 I <statement sequence3>;
7 D z5 M; o+ J# s% u* V) S0 u& ?end;3 D/ p! b! z2 Z
; ~. u4 y/ U4 X2循环语句
& Y( j5 O. d- l0 a (1) from <statement sequence1>
" V* u; {) P* U) R' W, a until <condition> loop/ `) H# Q. v% o
<statement sequence2>;1 [) `3 P1 s5 _- k+ S# {: k _9 \
end;+ ^, r$ s1 j/ |
(2) while <condition> loop
4 Q. V4 m' R7 h6 ?$ `8 g8 { <statement sequence1>;& W/ c; g ^1 R& v N5 w
end;/ p- K$ l5 Q0 [' Q4 ^
(3) repeat
" N d! q$ U" N0 S7 l9 U# z" I <statement sequence1>;
& L: M X! ?7 p g until <condition>;2 W; l }3 g: C+ [1 D; z- E
(4) for <condition> to <condition> loop* C1 E% C$ K. w2 O: ^ h; F
<statement sequence1>;' @, g7 K0 d( d8 i' O; S
next;4 g2 s ?$ z" W Y
3中断语句
& i+ a/ S6 Q& I1 L# O- J3 ^3 ~ waituntil <condition> prio <integer expression>;6 E5 n. A! k9 W1 g8 n, U! _! z4 b
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: W6 f0 U4 f3 }" ~+ v; w$ a3 |- S以上为常用的函数！
0 y& \) W) q4 a. f8 c5 \7 _6 I还有很多，如有需要我把资料发到你邮箱里 : I8 q- N/ s! P" u4 X4 @
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