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发表于 2012-11-13 08:48:12
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1判断语句
: K, ^+ e3 y# o0 A+ d) P0 t if <condition> then
; q- K6 B5 f5 C) |, a9 l0 y% r: s# S+ [; q <statement sequence1>;
! v5 P. w: a' \* Z elseif <condition> then
" h, b3 g6 J7 f5 u: }+ ?9 J <statement sequence2>;
. h" Q9 v, k% c5 B' p, M else 9 }+ g1 P- [7 `' j
<statement sequence3>;1 W& J$ [" t- }. |2 ^# M
end;
% j9 O c3 L' P如果分支比较多，用：
2 k. j2 ?) Q& [) F* V" C inspect <expression>
9 T, h: C) R! d when <constant_list> then4 E5 u- M# V. F f4 s
<statement sequence1>;
* D/ u7 D( X1 j S when <constant_list> then. |" X% E6 V6 ]+ Q
<statement sequence2>;
' i$ D* }) }: F, d ...
! d. M7 Y9 D8 ~ else
1 K3 }3 _. `) e0 r- m <statement sequence3>;
/ x8 v4 Q; i2 M. a0 T0 M" Rend;
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& S7 W' l* e2 X4 N2循环语句* k9 \* e: H) t9 d$ ]( Z
(1) from <statement sequence1>. n3 I; D& z: ]. \2 S4 W
until <condition> loop
8 D5 t( v5 C' s. }2 `+ Y' s7 F! E8 r h& @ <statement sequence2>;* h$ J7 C! F6 D# U0 N
end;
4 E: q+ s( n7 |5 O# S: x; \ (2) while <condition> loop+ j; Q3 ^6 W0 r' P/ p- l6 |
<statement sequence1>;4 n2 {+ p. S" p& s9 o3 f. [3 M/ U1 [
end;7 X6 K8 Y$ g0 e9 e' y( f/ `
(3) repeat 6 W4 j. U( v* L- R* ~
<statement sequence1>;
* C2 V/ P6 |, {% E/ {* Z until <condition>;1 {% n6 S! T! {, Z, f
(4) for <condition> to <condition> loop
. a0 j' o0 a/ `1 P7 F+ h# [+ h# e <statement sequence1>;
+ C" L" M! Q/ y3 [$ E1 t next;
- h/ l( m4 ] O3中断语句
E; w. N* J4 n! e: d2 v* l9 x5 j waituntil <condition> prio <integer expression>;
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6 z7 W3 n. q' T& H以上为常用的函数！" ^: W7 X- F; H4 y. x
还有很多，如有需要我把资料发到你邮箱里 ; `- v2 N2 z3 n+ o9 J; P5 I1 B
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