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1、实验三查找匹配字符串1.实验目的：查找匹配字符串SEARCH。2.实验要求：程序接收用户键入的一个关键字以及一个句子。如果句子中不包含关键字则显示“Nomatch!”；如果句子中包含关键字则显示“Match!”，且把该句子中的位置用十六进制数显示出来。实验结果：要求程序的执行过程如下：Enterkeyword:abcEnterSentence:Wearestudyingabc.Matchatlocation:11Hofthesentence.EnterSentence:xyz,Ok?Nomatch.Enter
2、Sentence:^C3.实验报告要求:(1)分析要点及调试后的正确程序。(2)实验体会。源代码：DATAREASEGMENTSTRING1DB"Enterkeyword:$"STRING2DB"Entersentence:$"STRING3DB"Matchatlocation:$"STRING4DB"Nomatch!",13,10,"$"STRING5DB"Hofthesentence.$"keywordDB50D,?,51DDUP(?)sentenceDB50D,?,51DDUP(?)DATAREAEND
3、SCODESEGMENTMAINPROCFARASSUMECS:CODE,DS:DATAREA,ES:DATAREASTART:PUSHDSSUBAX,AXPUSHAXMOVAX,DATAREAMOVDS,AXMOVES,AXLEADX,STRING1MOVAH,09HINT21HLEADX,keywordMOVAH,0AHINT21HMOVAH,02HMOVDL,0AHINT21HLEADX,STRING2MOVAH,09HINT21HLEADX,sentenceMOVAH,0AHINT21HMOVAH,0
4、2HMOVDL,0AHINT21HLEASI,keyword+2;关键词LEADI,sentence+2MOVAX,0MOVAL,[sentence+1];句子字符个数MOVAH,[keyword+1];关键词字符个数CMPAL,AHJLNOSUBAL,AHMOVAH,0MOVCX,AXINCCXCOMPARE:PUSHCXMOVCX,3;建议采用movax,字符个数，使字符的个数不固定CLDREPZCMPSBJZMATCHMOVAX,3;建议采用movax,字符个数SUBAX,CXSUBSI,AX;关键词回
5、到词首MOVAX,2;建议采用movax,字符个数-1SUBAX,CXSUBDI,AXPOPCXLOOPCOMPARENO:LEADX,STRING4MOVAH,09HINT21HJMPEXITMATCH:POPCXMOVBX,DILEADX,STRING3MOVAH,09HINT21HSUBBX,OFFSETsentence+2SUBBX,2;首地址所在字符串中的地址CALLCHANGELEADX,STRING5MOVAH,09HINT21HEXIT:RETMAINENDPCHANGEPROCNEARPUS
6、HAXPUSHBXPUSHCXPUSHDXMOVCH,4MOVCL,4ROTATE:ROLBX,CLMOVAL,BLANDAL,0FHADDAL,30HCMPAL,3AHJLPRINTITADDAL,7HPRINTIT:MOVDL,ALMOVAH,2INT21HDECCHJNZROTATEPOPDXPOPCXPOPBXPOPAXRETCHANGEENDPCODEENDSENDSTART
