name

a="henansheng"

b=" xinxiangshi"

c="guangongliu"

?len (trim(b)) 16

?len(ltrim(b)) 11

?a+ltrim(b)+c

henanshengxinxiangshiguangongliu a="yuanlairuci"

?left(a,2) yu

?right(a,5) iruci

?substr(a,4,7) nlairuc

?substr(a,5,7) lairuci

?occurs("a","aweibckzvbasjaajhjvxa") 5 ?at("a","aweibckzvbasjaajhjvxa",3) 14 ?at("a","aweibckzvbasjaajhjvxa",5) 21 a="tongxueliulingyu"

?stuff(a,8,9,"zhaosan") tongxuezhaosan ?stuff(a,8,9,"") tongxue

set mark to "-"

?date() 12-12-10

?"xianzaishijian:"+time()