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发表于 2012-11-13 08:48:12
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1判断语句# |' ]3 A' ]; Y0 z* Q# R
if <condition> then7 R3 O- }' K' s5 ], D: Q1 e
<statement sequence1>;
0 M9 z/ L. l9 B' ?9 e2 L0 T7 ^ elseif <condition> then! g# h# C; ]6 g
<statement sequence2>;. V, n, j, {/ n' B1 v4 O
else + x- h! m$ p! g- g; o; }
<statement sequence3>;/ B3 T/ E6 h6 v, n, D
end;
! d5 O4 [( p4 H, I" \; J9 O/ `如果分支比较多，用：' h+ s4 t5 E/ M6 a8 u
inspect <expression>
9 W/ j. D) ^, F- X& R when <constant_list> then) x. E" n5 E; R$ h% |( ]/ g
<statement sequence1>;# |$ {" A$ [9 k7 l7 o
when <constant_list> then
7 l, L6 Q# e- a; F" s8 k i <statement sequence2>;& t/ M# R6 }6 N. d4 |# `2 a! {: r) h
...
- D: r/ h7 Q$ t$ \2 [# C/ ?) ] else
9 d& U: i( r, r4 \$ P- z1 ], H4 i <statement sequence3>;$ f4 J( W& H2 R1 o
end;
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, ?& @& V" W% u# ` q' c2循环语句; n- ^4 C- o# m' E. H3 Z0 r/ }
(1) from <statement sequence1>% m* w. g6 N5 B/ G2 d3 M0 E! d
until <condition> loop6 q N2 F2 o" s& Y Q
<statement sequence2>;* m( Q4 }8 t$ O
end;5 V* [; b+ t, J4 R
(2) while <condition> loop
/ D3 S+ J2 _/ H* u9 U, M8 Q <statement sequence1>;
6 u! i. G, w4 Z/ r0 }- P4 M3 z3 i G end; @4 r5 a+ m! y( v
(3) repeat
" k, @: i* W9 C, o- ]( Z <statement sequence1>;
, E9 Q# [0 f$ @' s* n until <condition>;' V2 v0 c; }* m1 Q1 [4 @6 I4 X
(4) for <condition> to <condition> loop, ]( x6 ^# ~" W, K9 ^9 K$ C$ ^
<statement sequence1>;
5 t: d* z3 |- e: V1 g' |! C next;( R. P9 U2 ^+ W
3中断语句2 B& g% u; u* U
waituntil <condition> prio <integer expression>;# Q% ~2 A( _2 S+ F2 b4 K3 K
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+ |$ A8 u: W! R, ]! A以上为常用的函数！# P- t- l; q. Q0 \& _
还有很多，如有需要我把资料发到你邮箱里 0 m+ }! ~9 t: {7 w9 {4 E/ I- u$ Y
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