匯編語言-實驗四字符串的匹配與替換程序設計

匯編語言-實驗四字符串的匹配與替換程序設計實驗四字符串的匹配與替換程序設計一、實驗目的1）掌握串操作指令的使用方法。2）掌握串處理程序的設計方法。3）熟練使用各種程序結構。二、實驗內容1）編制兩個字符串比較子程序。2）編制在一個字符串中查找給定字符串的程序。3）編寫程序把從鍵盤輸入的以回車為結束符的字符串中的空格去掉并按相反的順序輸出。4）編寫程序在字符串STRING1中指定位置插入字符串STRING2。5）編寫程序在字符串STRING1中指定位置刪除子串。三、源程序EXAM4－1DATASEGMENTSTR1DB'MES'STR2DB'MESS'STR3DB'MATCH$'STR4DB'NOTMATCH$'DATAENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOVAX,DATAMOVDS,AXMOVES,AXMOVCX,4MOVDI,OFFSETSTR1MOVSI,OFFSETSTR2REPZCMPSBJZLAB1JNZLAB2LAB1:MOVDX,OFFSETSTR3MOVAH,09HINT21HMOVAH,4CHINT21HLAB2:MOVDX,OFFSETSTR4MOVAH,09HINT21HMOVAH,4CHINT21HCODEENDSENDSTARTEXAM4－2DATASEGMENTMESS1DB'ENTERKEYWORD:','$'MESS2DB'ENTERSENTENCE:','$'MESS3DB'NOMATCH!',13,10,'$'MESS4DB'MATCHATLOCATION:','$'MESS5DB'HOFTHESENTENCE.',13,10,'$'CHANGEDB13,10,'$'SEN1LABELBYTEMAX1DB14ACT1DB?STOKN1DB14DUP(?)SEN2LABELBYTEMAX2DB100ACT2DB?STOKN2DB100DUP(?)DATAENDSCODESEGMENTMAINPROCFARASSUMECS:CODE,DS:DATA,ES:DATASTART:MOVAX,DATAMOVDS,AXLEADX,MESS1MOVAH,09HINT21HLEADX,SEN1MOVAH,0AHINT21HLEADX,CHANGEMOVAH,09HINT21HSUBCX,CXA10:LEADX,MESS2MOVAH,09HINT21HLEADX,SEN2MOVAH,0AHINT21HLEADX,CHANGEMOVAH,09HINT21HCMPACT2,0JEEXITMOVBX,0A20:MOVCL,[ACT1]LEASI,STOKN1LEAAX,STOKN2ADDAL,BLMOVDI,AXCLDREPCMPSBJZA30INCBLCMPBL,ACT2JEA40JMPA20A30:LEADX,MESS4MOVAH,09HINT21HMOVAH,02HADDBL,1MOVCL,4ROLAL,CLMOVCL,2JMPA50A1:LEADX,MESS5MOVAH,09HINT21HJMPA10A40:LEADX,MESS3MOVAH,09HINT21HJMPA10A50:DECCLANDAL,0FHCMPAL,10JNBA60ADDAL,'0'A2:MOVDL,ALMOVAH,02HINT21HCMPCL,0JEA1