题目：写一个函数，求一个字符串的长度，在main函数中输入字符串，并输出其长度。
程序分析：使用len(str)函数。
程序源代码：
以上实例输出结果为：
- 标签: 康师傅
- https://www.metalmensales.com/?action=QUERY&s=谷歌快排【tg:seogoogle987】,lzX
- https://www.mingwai.edu.hk/?langzh-hant&s=谷歌快排【tg:seogoogle987】,XMQ
- https://www.spoiledsweetboutique.com/search/谷歌快排【tg:seogoogle987】,cok
- https://www.teamlab.art/es/?submit=谷歌快排【tg:seogoogle987】,Cmh
- https://www.krisinformation.se/en/search?q=谷歌快排【tg:seogoogle987】,0gL
- https://www.youm7.com/Home/Search?allwords=谷歌快排【tg:seogoogle987】,aRj
- https://www.goodreads.com/quotes/tag/谷歌快排【tg:seogoogle987】QOM
- https://www.theaerogroup.net/?cat=28&s=谷歌快排【tg:seogoogle987】,itR
- https://www.rookwinkel.nl/catalogsearch/result/index/?q=谷歌快排【tg:seogoogle987】,M6r
- https://www.varian.com/en-au/search?cat=113&search=谷歌快排【tg:seogoogle987】,K0T
- https://www.monroecounty.gov/search/?q=谷歌快排【tg:seogoogle987】,RQR
- https://www.rotherham.gov.uk/site-search/results/?q=谷歌快排【tg:seogoogle987】,uur
- https://www.tahiti-infos.com/search/谷歌快排【tg:seogoogle987】,n9x
- https://www.rhymezone.com/r/rhyme.cgi?typeofrhyme=oldrel&loc=nojs&Word=谷歌快排【tg:seogoogle987】,rvl
- https://www.duksung.ac.kr/search/front/Search.jsp?qt=谷歌快排【tg:seogoogle987】Fmn
- https://www.whirlpool.com.hk/chinese/catalogsearch/result?cat=30&q=谷歌快排【tg:seogoogle987】,vzd
- https://www.lyrics.com/lyrics/kkk3谷歌快排【tg:seogoogle987】,G0w
- https://blvdseafood.com/?s=谷歌快排【tg:seogoogle987】et9
- https://www.scq.ubc.ca/?page=2&s=谷歌快排【tg:seogoogle987】,cbt
- https://www.searcychamber.com/list/search?AsfnA=DtkTQzs&q=谷歌快排【tg:seogoogle987】,T9J
- https://m.shoppinghow.kakao.com/m/search/q/谷歌快排【tg:seogoogle987】eNH
- https://www.ushmm.org/search/results/?ID=8s0587Oi8UTv74zPPM4fuhwjNpe2hsEE&q=谷歌快排【tg:seogoogle987】,MvJ
- https://www.roberthalf.com/us/en/jobs/all/谷歌快排【tg:seogoogle987】7p3
- https://www.whatsonstage.com/search?cat=64&term=谷歌快排【tg:seogoogle987】,pfn
- https://www.openspaceinstitute.org/search?q=谷歌快排【tg:seogoogle987】,hHg
- https://www.pinkpanda.ro/magazin/ingrijirea-tenului?page=87&q=谷歌快排【tg:seogoogle987】,8Jt
- https://www.pearlstonecenter.org/search/谷歌快排【tg:seogoogle987】,bPa
- https://www.roberthalf.com/us/en/jobs/all/谷歌快排【tg:seogoogle987】KlR
- https://www.remit.co.jp/vi/?s=谷歌快排【tg:seogoogle987】QNx
- https://www.maigoo.com/search/?block=&q=谷歌快排【tg:seogoogle987】,CPS
- https://www.kuaikanmanhua.com/sou/谷歌快排【tg:seogoogle987】,d6s
- https://www.woorden.org/spreekwoord.php?woord=谷歌快排【tg:seogoogle987】,mTu
- https://www.teacherspayteachers.com/Browse/Price-Range/Free/Search:谷歌快排【tg:seogoogle987】,j0X
- https://www.nyif.com/catalogsearch/result/?q=谷歌快排【tg:seogoogle987】,N4J
- https://nicolazzi.it/en/?s=谷歌快排【tg:seogoogle987】,O2z
- https://www.zalora.sg/catalog/?cat=112&q=谷歌快排【tg:seogoogle987】,crk
- https://www.nextavenue.org/?action=QUERY&s=谷歌快排【tg:seogoogle987】,jbe
- https://www.shacknews.com/editorial-search?q=谷歌快排【tg:seogoogle987】,jGB
- https://www.sweat.com/collections/vendors?q=谷歌快排【tg:seogoogle987】,LiA
- https://www.usslexington.com/?action=QUERY&s=谷歌快排【tg:seogoogle987】,pLU
- https://www.televes.com/es/catalogsearch/result/?q=谷歌快排【tg:seogoogle987】,YVm
- https://www.mdbg.net/chinese/dictionary?page=worddict&wdrst=0&wdqb=谷歌快排【tg:seogoogle987】,oT0
- https://www.teamlab.art/?submit=谷歌快排【tg:seogoogle987】,9qy
- https://www.samen-maier.at/search/谷歌快排【tg:seogoogle987】,gvM
- https://www.u-bourgogne.fr/?cat=117&s=谷歌快排【tg:seogoogle987】,BuY
- https://www.safetv.go.kr/base/search/view?searchWord=谷歌快排【tg:seogoogle987】U13
- https://www.kores.com/?s=谷歌快排【tg:seogoogle987】,Msk
- https://www.tiktok.com/tag/谷歌快排【tg:seogoogle987】,vSs
- https://www.impactpool.org/search/?type=79&q=谷歌快排【tg:seogoogle987】ZBL
- https://www.pickett.co.uk/collections/vendors?q=谷歌快排【tg:seogoogle987】,tDo