|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句' F. n% j( A: ?- T9 j! w
if <condition> then
. Z J/ v7 E: h6 P e <statement sequence1>;# {5 `. w- r, ]& w6 ] A" q
elseif <condition> then
: n3 R5 v/ V3 c* ^( t5 z! w! Z <statement sequence2>;
; I7 P0 g' i' f \& |/ E else
; b, j. [; ?' m( s$ i" I' X! K: n- @ <statement sequence3>;1 w8 @9 I* s, j- o3 ~" z( u7 J
end;
8 E; q6 k- l4 \& O如果分支比较多，用：
/ h3 J8 _: V4 {/ O inspect <expression>, @8 ]1 y* c- A) D$ e( b' U' I
when <constant_list> then
: T# a, A/ Z9 i* q& J <statement sequence1>;* t" T# p8 L9 h( L% W
when <constant_list> then
3 v. G6 z, A' r) h( @ <statement sequence2>;
2 G1 ?6 z" a. K) a& F ...4 i9 m! ^/ y. t* M# w8 Z
else
6 s2 i( I" y7 p <statement sequence3>;
: u* X8 z* l8 E4 |7 Aend;. b I5 {3 d7 V+ V4 |6 m1 D
' h+ K7 C$ H/ B3 y
2循环语句
3 B2 C! H2 k8 z9 d i (1) from <statement sequence1>) w( g) q& N( \; K
until <condition> loop
. z" i/ F/ C- {1 | <statement sequence2>;
, Q" e% q( |8 b% ^ end;
) I% b7 x6 z2 j$ I8 N$ r/ h (2) while <condition> loop
4 H+ [6 ~! U) _* r& d% ] <statement sequence1>;
! D7 D$ M% Q" j2 }- w end;
" u7 B0 H, R3 i& @1 l" c- f+ Q (3) repeat
* ^% |! P- ^2 S: ~% ? <statement sequence1>;% }( y( W5 H6 [7 E1 R$ O" ^5 I) E
until <condition>;7 o" a/ ~+ z" s$ S& u; \2 I
(4) for <condition> to <condition> loop
* j% {+ `& k/ p% D$ v8 R9 y8 t2 W <statement sequence1>;( g% }% `, n. Z( S. Y+ G/ u1 N
next;' p" i# G4 q0 J7 S. J, \
3中断语句
1 o5 o9 O4 Q1 `! E' b( y- v( N waituntil <condition> prio <integer expression>;6 ^3 r% n5 ^( O2 G! j
% H! A: |3 b9 J1 D+ m& e
, ?0 R" ?. M$ S& `以上为常用的函数！
g( e( G6 l. S+ }; G( O还有很多，如有需要我把资料发到你邮箱里
8 v9 e& _+ s% \" S# k* r1 i1 Q0 M" T6 V, `% ~6 F
, u+ d7 Y' ?( L
- t: `0 a( W' M& i2 C5 V+ o w4 j% O$ `2 _( [! I0 X
* T4 S, F5 d& `6 w/ Z a! S; l& A& ]5 D: m5 u! d
D5 R8 Y. l r9 D2 Q) b
. i j! v L: O* A
6 |7 _/ W H) f3 n0 l q5 B
% d3 y" r! F: i0 v) J. \0 _ |
|
[复制链接]
