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发表于 2012-11-13 08:48:12
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1判断语句3 b2 V/ N5 K3 u' N1 W( t
if <condition> then1 \/ [9 k2 R. D* Z3 g6 a
<statement sequence1>;
6 \7 M J) y i" h) j. W0 d elseif <condition> then% v/ o' f8 m4 P3 V
<statement sequence2>;2 G2 s; J; P/ H y3 C3 M. ?
else + P# I. E- Z: w# k9 i) K
<statement sequence3>;. b: }1 `5 F7 \: f0 N5 P
end;
1 H- i7 \8 y1 ]% ~' _3 {% d如果分支比较多，用：
* E. m; G- k6 `3 g$ t6 Y inspect <expression>
4 G- P4 M3 ]/ G L when <constant_list> then& d+ X' M9 o, p4 S* v
<statement sequence1>;
: v% E7 j: f5 t- D) N0 ?( t% { when <constant_list> then) | P! d" J& s, H, Z- \8 Q- \
<statement sequence2>;( V- |' i8 K8 i/ p; G4 C z8 }, g
...
) {8 a* B4 U4 e( k. q else$ j! ?$ ]7 Y* s3 t
<statement sequence3>;9 R0 }6 A. r4 V+ }1 i1 Q
end;# ?# w/ N z: Y/ h4 C2 e+ }( C
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2循环语句7 q5 B2 R$ x3 I" g. W: N' W, v! R
(1) from <statement sequence1>, v( E) R; {- G+ ~# {0 S w* n
until <condition> loop5 x, I3 X& i! E% E" s0 j
<statement sequence2>;6 U1 q3 E# E3 l8 C( K4 s8 {6 T
end;
3 X; E E# K. d& d' M9 H2 Y) y* D (2) while <condition> loop: n, ~- _9 |% ~* A, K2 p. h6 v
<statement sequence1>;! P) j0 u: Q- Y; m2 ^, v) r# y
end;" F/ R0 U0 _ Z* C2 H
(3) repeat ( w, ?7 |# r& `" |
<statement sequence1>;
9 n V# J1 o: v( S) \ B/ ` until <condition>;
9 v( W$ ? s9 A( w, j) z (4) for <condition> to <condition> loop q" c2 u- p! a9 F9 V' x5 }# j8 g
<statement sequence1>;
2 h; Q/ h6 M" }# ?- t5 O( u next;2 w/ H# U$ [+ X5 y7 p$ O [9 _
3中断语句7 m% \* v* ~" F0 m! ]0 \9 a/ f. Y
waituntil <condition> prio <integer expression>;
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9 T6 O' y9 F" w* _! a! ]4 U) J' {- H以上为常用的函数！
$ o/ r( f; a' V4 `4 ]还有很多，如有需要我把资料发到你邮箱里 z8 a5 w! ] r+ n& X: D$ M
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