|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
4 y0 t. D1 U" Y S* M4 p if <condition> then
. S( z( C6 Z' D) r+ S- ? <statement sequence1>;2 c( P0 j/ ]! S: ?' b+ _/ O& O
elseif <condition> then( v5 q3 s$ Q2 Z; V! b$ w1 a! d$ y
<statement sequence2>;% j- ]% d, \1 y6 c3 f. t% e8 o
else / z: X5 b/ H0 O: S u
<statement sequence3>;: P, p( t0 x2 }5 N4 Z* k
end;
% ^! V8 H! ?$ J6 T8 D, B9 }* z- T如果分支比较多,用:% t7 f/ _) H0 D
inspect <expression>3 `; i D1 \6 F5 a* H
when <constant_list> then
& x/ d: E( L$ r! t <statement sequence1>;3 W( U5 E% H) }5 H# j. v$ G' G4 n
when <constant_list> then
' K! l2 s2 I/ n: w0 u <statement sequence2>;
: w+ |& x8 o* g2 } .... A, C3 Q4 r! N# e5 u" q- F4 h
else6 e9 l5 N3 Y/ R, Q
<statement sequence3>;& r, k/ w- N9 I: F& y8 w- \2 H# g
end;* x z# ~ ?( ^+ g1 L2 a5 ?
" G5 a2 a, x6 p: f7 ?# ]
2循环语句
9 D7 R1 q% n: Q! v. p (1) from <statement sequence1> N2 U+ R% ] ]3 ?
until <condition> loop6 f& U2 J) }0 L9 x" B+ y
<statement sequence2>;
4 U. F8 j1 j& R7 P {! l6 F, o0 a end;4 D' r$ V; o6 t
(2) while <condition> loop
- R! A$ d8 R7 A. @ <statement sequence1>;! \1 Q+ D) h! i" t; { H- Q
end;
% \0 P$ S# y0 \- e/ `; S1 O3 P6 h (3) repeat ! j! G6 o( ?6 C. _7 z* }' J I0 e
<statement sequence1>;
. o9 L5 L. O8 L9 F8 l until <condition>;
; y& N7 v8 G, J( v, f3 [ (4) for <condition> to <condition> loop
" j3 i/ s3 V2 A3 \8 O <statement sequence1>;/ B/ S. Y8 @9 T1 I( I' L; N, A) f3 z* e
next;
' c( d6 Y( |: r% S8 W- Q3中断语句4 E# V& ^6 {, A! D! U1 }
waituntil <condition> prio <integer expression>;5 t& v- _5 I% ~0 I, R: c# Z& h$ m
0 K; D0 v; I+ m0 X9 m! q
$ S- m2 \) d+ h以上为常用的函数!
8 S5 U, [) p$ a( _& a/ y还有很多,如有需要我把资料发到你邮箱里 7 m2 A" t* l$ R0 f# @( z( G' Z
! f6 E% }3 A& n1 `
I# H4 q. y% _! D% N# O; E8 k3 N% ^+ U# x5 A- g3 A( k: U
: n) A6 A3 G* l' ?7 }, l
- c( {3 B3 v2 ~9 ^8 o" M% s: K) U# S' z
3 K! U$ g$ X* u4 {$ u3 g5 P
: U, D- K2 D4 s- a) @% i1 g" C; r# J. u' x$ B
- |' v, ^) m1 |- Q+ S; t; H( f" A
|
|