汇编语言-实验四字符串的匹配与替换程序设计

汇编语言-实验四字符串的匹配与替换程序设计实验四字符串的匹配与替换程序设计一、实验目的1）掌握串操作指令的使用方法。2）掌握串处理程序的设计方法。3）熟练使用各种程序结构。二、实验内容1）编制两个字符串比较子程序。2）编制在一个字符串中查找给定字符串的程序。3）编写程序把从键盘输入的以回车为结束符的字符串中的空格去掉并按相反的顺序输出。4）编写程序在字符串STRING1中指定位置插入字符串STRING2。5）编写程序在字符串STRING1中指定位置删除子串。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