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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句* E) Q% S: a2 u, D
if <condition> then
! I( r* o: R% Y% K& b- h- K <statement sequence1>;) p' V* m; |. ^4 o4 K
elseif <condition> then
' K9 n2 z' w0 L- T <statement sequence2>;: B4 q* V& `0 G7 o. `: R. ~0 ~
else 2 m: y7 I7 f8 e. r8 H
<statement sequence3>;/ g! l$ M2 q8 ^6 T/ K
end;- f" ~ G9 P i1 `) S% r" z
如果分支比较多，用：7 v0 [6 l5 e5 ?( Y/ v( c, Z# l" _7 ~
inspect <expression># B# M6 {; }) N( w! } x' H6 R' j
when <constant_list> then
0 q1 Y9 I, e/ X- R, [% h* m5 V' R <statement sequence1>;3 K7 Q6 @& K7 y+ ^( p% ]4 G7 s
when <constant_list> then ^# H3 k+ p2 d4 R, y& a
<statement sequence2>;
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else
' _% _8 B; r* M* a3 l' @0 M$ b! J <statement sequence3>;0 [( T# l' |" v3 [* C, n
end;
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2循环语句8 g& D8 y. _" \+ i. ]& Y+ P: |" a
(1) from <statement sequence1>' a. e& }( i6 Z# ]8 P# [ Q
until <condition> loop
3 H3 c7 {% D% D; R9 d) W: X7 R* U0 S <statement sequence2>;
" \4 J/ O$ U( p) O end;5 m" g5 l9 y. F: p# ^4 l
(2) while <condition> loop
0 Y! P. E7 w% Z/ G7 t% P <statement sequence1>;- R/ t: V+ b) g0 |% h
end;
9 ]: o9 X9 b4 B( R T3 } (3) repeat
3 B: Y$ {" I% E) O <statement sequence1>;& q, u: w6 m9 e" C$ R
until <condition>;. i( u! n- s% B0 a6 [
(4) for <condition> to <condition> loop- e7 H8 M) W. g1 {# j3 z1 \- |" h! N
<statement sequence1>;" y( J% y% G a! u. z/ W, x
next;- e+ H7 c) b" n0 D6 _
3中断语句: C: x0 y, k+ ]1 O/ B; }
waituntil <condition> prio <integer expression>;% _* a$ s# b" Q5 h4 b, j
8 y) x% N. E) |1 i% c; f1 I# z! ^
* A* T# i) z, n3 k& y0 b$ x以上为常用的函数！) M# ] j# C9 W7 c
还有很多，如有需要我把资料发到你邮箱里
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