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发表于 2012-11-13 08:48:12
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1判断语句
: }* o+ L: U3 |1 L0 F+ C: \2 h/ e if <condition> then
( |, u0 ?5 L7 _ <statement sequence1>;
1 }; P' b9 s$ o& o p$ y7 g elseif <condition> then
$ \7 Y2 F* E$ ?8 f B <statement sequence2>;% N3 V1 Y' @: o4 d8 o3 U
else % X A3 U, f" Y, h. N
<statement sequence3>;
3 I J" _! H v; E% I2 J end;
/ E* u. J9 A u- s$ G1 j2 |5 v3 W# z如果分支比较多，用：4 I! q& g o1 h, N- n0 r3 |* r
inspect <expression>6 x1 q- i" X% Q0 l3 }8 r2 w- F4 E
when <constant_list> then* e, t/ N3 o( e4 ]/ A1 `
<statement sequence1>;8 V6 _! L1 o* ?7 {% V
when <constant_list> then
1 E' N3 q% f' n- H <statement sequence2>;$ c0 X4 z0 u* k# X0 W
.../ R, Y& V" r" H" j+ j
else6 F: U* V' i0 R' {' {( c
<statement sequence3>;( t+ k' s" e, Y* \ o( K
end;
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2循环语句( A X# t3 @$ v
(1) from <statement sequence1>8 o3 a5 @: U! c, K2 c# C) D/ \
until <condition> loop
. ~2 J8 g) E* {6 g <statement sequence2>;
' K& z" Y+ @. r- \ end;
. t9 U4 u8 L2 B" B8 @ (2) while <condition> loop* W. X; S5 x% S* @
<statement sequence1>;" ^3 L6 R, g5 G# a
end;3 y c6 Q* k1 ^1 `* C" N
(3) repeat
! T+ l* k/ M7 Z/ d: u7 h <statement sequence1>;! r% ~* C: t; `# O) U3 \( Y
until <condition>;
; I$ A1 n! ^0 ? (4) for <condition> to <condition> loop
5 W/ [9 H' N, o) S/ n4 k; k <statement sequence1>;
* \' A6 @- e5 F( g: I8 ? next;2 l, c! J" n2 F) a# w, h/ _
3中断语句
- K, d) e9 y+ a& G5 j% W waituntil <condition> prio <integer expression>;6 s" ^3 n" x( D G& B# k
. w l/ f# w, n2 o* G
2 G3 `( W! D+ M以上为常用的函数！
3 Y0 M; |/ F9 y5 H5 J! d还有很多，如有需要我把资料发到你邮箱里 0 g* S- V8 ~: r+ y- ^
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+ |: ^$ R- B: @4 D$ d; j3 F+ O, ?( A% _# Z- F# Y
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