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发表于 2012-11-13 08:48:12
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1判断语句3 m) o) ]+ M* t7 Q; k
if <condition> then
1 Q. z' R" c6 n) B; p, d9 ^ <statement sequence1>;
# [. F0 |. ^% H elseif <condition> then
1 M# d, W( [1 v( {8 d. a( B/ [ <statement sequence2>;, i3 q q2 s0 [9 D% D2 P) d7 G
else Z' Y$ S* s: b- B$ G$ H F) p
<statement sequence3>;" X$ {$ U# {/ }* N6 y5 e
end; E* n- M: G F- ?& Z2 ^8 y" C
如果分支比较多，用：
% |! X- E: r$ \1 q" M8 ]. Z$ ], o inspect <expression>
2 t/ _; v o1 k! J5 i9 ? when <constant_list> then, g1 O" |7 b) D& K
<statement sequence1>;; s( ]/ j ` O: B
when <constant_list> then
' p" i8 s" E; [; R( b" ^' g <statement sequence2>;
- F% m& W8 D, j+ o3 _5 ? ] ...
. |! V1 a. s4 r; K else/ D2 Y8 g" q6 m0 |' z0 l$ J
<statement sequence3>;0 u* K o% e0 z6 W
end;8 V: o+ M$ C9 [5 ^
! n' v8 a; I9 U( T1 q2循环语句
& o- \5 k0 V9 P2 b: B) z (1) from <statement sequence1>
+ \* @- O+ u* [' d5 t until <condition> loop
" ~* U, D, c9 n0 U; W U. Q' s: p <statement sequence2>;* H( |% N: e" K' }5 L& L0 \
end;5 `) u7 l: M$ K+ j1 w! A K1 r
(2) while <condition> loop
* {' _7 y) t& L) Z4 j2 M <statement sequence1>;4 o7 l; O7 G/ Z* c
end;! x. W& R0 b" E0 }5 w- o; l( }
(3) repeat Z7 `9 P# S# Y* J) P- ]
<statement sequence1>;
4 _8 v4 Q8 S( u" I# } until <condition>;
1 r$ f* j! C% @0 k7 T$ c (4) for <condition> to <condition> loop
0 I4 ] T+ {4 f3 }/ ~& a <statement sequence1>;
( A$ Y: K& f8 R- W next;
. i: X' q& }. p, A3中断语句% ^2 D! Z' N3 |$ ~" m
waituntil <condition> prio <integer expression>;- x+ H3 h6 H$ |2 ]/ @' w
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以上为常用的函数！
" H: n- S) H, B1 B6 Y$ I, K2 f. R还有很多，如有需要我把资料发到你邮箱里
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