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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5 d- s5 `& L( C O
if <condition> then
1 A, l: }" Y+ W- e: n. A' h <statement sequence1>;
# Q- C/ _# e9 b! O5 S elseif <condition> then# }8 u ^# ]4 E7 c) {, v2 I5 Y7 f
<statement sequence2>;
p8 P4 Y3 A2 o. t. T- d else
& z5 W4 h6 G/ t: g9 n6 z7 f <statement sequence3>;/ I `# T& Y' M7 i
end;
; x9 y( l1 L6 J+ s' ]如果分支比较多，用：. J* M/ {* e9 }! E+ r) g7 t$ C* r
inspect <expression>. \. @' q4 b% o, J) b# P
when <constant_list> then3 \, d+ P4 z+ i
<statement sequence1>;* ~2 v3 C9 D, f/ {
when <constant_list> then5 Z4 e* y/ Z1 \
<statement sequence2>;
& ^) Z7 e, S# R; E1 D! |1 H: N ...
) D5 ]- v, R. J; P( ^; ~ else
/ J% e6 u4 u2 @( [7 E2 Q <statement sequence3>;
3 S+ a+ o3 f; `9 [0 Q, M1 F" N2 Oend;- X4 P# H& f2 j1 n3 o; N- y
* _ A% t% f! F$ {3 s) [* A3 S
2循环语句. B. Z* D! ?6 k9 t# U5 k
(1) from <statement sequence1>
# }9 s' z" d# Q: M$ _/ w0 K k6 h until <condition> loop6 e- V- b$ R0 G. M; N6 Z- d6 D
<statement sequence2>;( G4 k5 O W/ @7 J1 C6 s. a
end;
( K- ^3 K( i+ X; G9 n4 O (2) while <condition> loop
' T& P8 G9 f4 a0 P <statement sequence1>;
3 y& j5 d7 O& s u8 k end;
$ O$ Z* ^# [+ {1 r n, I9 d (3) repeat # Z) x9 `% | K+ j) O
<statement sequence1>;8 S0 R) @* s, D. F% r: |
until <condition>;
: Y1 A% @9 ], \: W (4) for <condition> to <condition> loop4 t; s4 b ]+ k+ u! I' m9 b0 v6 q) L
<statement sequence1>;, d: ?3 q) ]( W* U' D: O
next;
% ^; P. g/ N2 |+ m V. m% \8 E- F* W3中断语句2 m7 k* q; F% e
waituntil <condition> prio <integer expression>;
9 `+ K6 O! ^& B! t* K6 ^/ S; r5 J- t
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以上为常用的函数！
2 v# o4 k: D% h, `3 W8 C$ d% R0 Q# p, k还有很多，如有需要我把资料发到你邮箱里 1 M) J, k3 N- N7 M- [
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