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发表于 2012-11-13 08:48:12
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1判断语句
4 D I H# I1 c% M( q if <condition> then: ^+ q# y: @. w; }" S2 ?/ ?$ q
<statement sequence1>;+ J+ d1 a9 ^; u& ]& |
elseif <condition> then
& k, J$ @: @9 }2 o. N% s <statement sequence2>;
8 |9 _5 w( i n3 |% Y else 8 h1 L4 Z$ ~1 o
<statement sequence3>;, z" z1 w6 @9 Y" S
end;
' z# ^- K& V I1 z; G, t" s如果分支比较多，用：
: Q0 s) I# `, N/ }1 @) J6 h inspect <expression>; Y" f* u' Q8 _' s5 P" J" L+ R
when <constant_list> then' K+ q! I+ \+ x" F8 ?
<statement sequence1>;
7 `: J6 Z2 X7 I: {- ] when <constant_list> then' x( d/ |- a1 `4 A. W- F. u
<statement sequence2>;7 c9 I/ x- H ~- g8 n& e @" I1 I9 N
...0 R2 q% S/ |$ R6 c
else
B, \3 }& N* d h4 R <statement sequence3>;+ Z" U) l" V# S
end;4 {& |$ T7 s+ |" K/ i) J8 \, @% r
, F8 M. y9 `, @, r/ ]' ]2循环语句3 N$ ^6 {! g# E6 I" `* \
(1) from <statement sequence1>
5 }3 f4 G @7 G! _ until <condition> loop
, M5 A. r1 @: a1 z0 z2 v <statement sequence2>;
2 _3 Y6 C/ w, Y e8 i4 Q* | end;
# S4 X$ _" K4 j9 c! m0 Y (2) while <condition> loop- m% S* j1 c2 Y9 r% J
<statement sequence1>;
: w& r/ I; k8 A7 Y end;
/ J {' ~+ c; t' Q4 v, ` A- W (3) repeat ( {0 x. ?1 X% v& s2 t" n8 n
<statement sequence1>;1 }' C& R( t1 g
until <condition>;9 t9 u5 z. A# P( X
(4) for <condition> to <condition> loop
9 B2 S1 t6 K" x8 [1 O: d6 K, A <statement sequence1>;
3 {& G4 P4 D Z, `* m ~0 I next;
; t5 S3 o5 N" [7 x" a3 T$ W8 t3中断语句. z/ u* x9 R% I6 [/ e
waituntil <condition> prio <integer expression>;
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以上为常用的函数！- ^( @$ F" g) f4 I( h2 n! m" @
还有很多，如有需要我把资料发到你邮箱里 & \4 e/ O5 l' J
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