北理工8086匯編語言考試上機試題

1、1. 請任意輸入一個字符串，將該串倒序后在屏幕上顯示。2. 請任意輸入一個字符串，統(tǒng)計其中空格和A的個數(shù)，并將結(jié)果顯示在屏幕上。3. 請任意輸入一個字符串，將其中的空格全部刪除，并將結(jié)果顯示在屏幕上。4. 請任意輸入一個字符串，將其中A換成B,并將結(jié)果顯示在屏幕上。5. 請任意輸入一個字符串，將其中A換成CC,并將結(jié)果顯示在屏幕上。Answerl:datasegmentbufldb100db?db100dup(?)buf2db100dup(?)buf3db'$'buf4db0dh,0ah,'$'dataendscodesegmentassumecs:code,d

2、s:data,es:datamainprocfarmovax,datamovds,axmoves,axmovah,0ahleadx,buf1int21hleasi,buf1leabx,buf1+2movcl,si+1movch,0movsi,cxdecsileadi,buf2again:movax,bxsimovdi,axdecsiincdideccljnzagainmoval,buf3movdi,almovah,9leadx,buf4int21hmovah,9leadx,buf2int21hmovah,4chint21hmainendpcodeendsendmainAnswer2：datas

3、egmentbuf1db100db?db100dup(?)buf2db0dh,0ah,'$'mem1db0mem2db0dataendscodesegmentassumecs:code,ds:data,es:datamainprocfarmovax,datamovds,axmoves,axmovah,0ahleadx,buf1int21hleadi,buf1+2leasi,buf1+1movcl,simovch,0movbl,0movbh,0again:moval,dicmpal,41hjnznextincbljmpdispnext:cmpal,20hjnzdispincbhd

4、isp:incdideccljnzagainmovah,9leadx,buf2int21hmoval,blmovah,0callprintfmovah,9leadx,buf2int21hmoval,bhmovah,0callprintfmovah,4chint21hmainendpprintfprocnearleasi,mem1movcl,10divclmovsi,ahaddal,30hmovah,2movdl,alint21hmoval,simovah,0movcl,1divcladdal,30hmovah,2movdl,alint21hretprintfendpcodeendsendmai

5、nbufdb100db?db100dup(?)bufldb0dh,0ah,'$'dataendscodesegmentassumecs:code,ds:data,es:datamainprocfarmovax,datamovds,axmoves,axmovah,0ahleadx,bufint21hleasi,buf+1moval,simovcl,almovch,almovdh,alincsiagain:moval,sicmpal,20hjnznextcalldeletedecchjmpkakanext:incsikaka:deccljnzagainleadi,buf+2disp

6、:incdidecchjnzdispmovah,24hmovdi,ahmovah,9leadx,buf1int21hmovah,9leadx,buf+2int21hmovah,4chint21hmainendpdeleteprocnearmovdi,simovdl,dhagain1:movah,di+1movdi,ahincdidecdljnzagainlretdeleteendpcodeendsendmainAnswer4：datasegmentbufdb100db?db100dup(?)bufldb0dh,0ah,'$'countdb0dataendscodesegment

7、assumecs:code,ds:data,es:datamainprocfarmovax,datamovds,axmoves,axmovah,0ahleadx,bufint21hleasi,buf+1movcl,simovch,sileasi,buf+2again:moval,sicmpal,41hjnznextcallinsertincchinccountincsinext:incsiinccountdeccljnzagainleadi,buf+2kaka:incdidecchjnzkakamoval,24hmovdi,almovah,9leadx,buf1int21hmovah,9lea

8、dx,buf+2int21hmovah,4chint21hmainendpinsertprocnearmovdh,chsubdh,countmovdl,chleadi,buf+2mac:incdidecdljnzmacagain1:movbl,dimovdi+1,bldecdidecdhjnzagain1movbh,43hmovsi,bhmovsi+1,bhretinsertendpcodeendsendmainbufdb100db?db100dup(?)bufldb0dh,0ah,'$'dataendscodesegmentassumecs:code,ds:data,es:datamainprocfarmovax,datamovds,axmoves,axmovah,0ahleadx,bufint21hleasi,buf+1movcl,simovch,0incsiagain:moval,sicmpal,60hjanextmovah,20hora