分支程序設計實驗報告分支結構程序設計.....實驗二分支程序設計一、實驗目的：1、學習分支程序的設計方法2PC過程二、實驗環境：硬件環境IBM/PC及其兼容機軟件環境操作系統DOSEDITMASM.EXE連接程序LINK.EXE調試程序DEBUG.EXE三、實驗容：1、在屏幕上顯示如下信息：1 2 Cat3 4 Pig5 EXIT(Pleasechoose1,2,3,4or5) 1，顯示“Ilikepanda”2，顯示“Ilikecat”3，顯示“Ilikerabbit”4，顯示“Idon’tlikepig”5，程序直接結束；若輸入其它字符，顯示“Youpressanerrorkey!”后程序結束。YYYYYNNNNN開始選項用戶輸入Al=1Al=2Al=3Al=4Al=5Youpressanerrorkey結束IlikepandaIlikecatIlikerabbitIlikedonotlikepig2）源程序DATA INFOR1DB0AH,0DH,“1Panda:$"INFOR2DB0AH,0DH,"2Cat:$"INFOR3DB0AH,0DH,"3Rabbit;$"INFOR4DB0AH,0DH,"4pig:$"INFOR5DB0AH,0DH,"5EXIT:$"INFOR6DB0AH,0DH,"(pleasechoose1,2,3,4or5):$"INFOR7DB0AH,0DH,"IlikePanda:$"INFOR8DB0AH,0DH,"IlikeCat:$"INFOR9DB0AH,0DH,"IlikeRabbit;$" DB0AH,0DH,"Ilikepig:$" DB0AH,0DH,"youpressanerrorkey!:$"DATAENDS；數據段結束CODE

；代碼段開始ASSUMECS:CODE,DS:DATA；段尋址STARTMOVAX,DATA;dataax中MOVDS,AXds賦值MOVDX,OFFSETINFOR1INFOR1段偏移地址【運行后1Panda:】MOVAH,09HINT21HMOVDX,OFFSETINFOR2MOVAH,09HINT21HMOVDX,OFFSETINFOR3MOVAH,09HINT21HMOVDX,OFFSETINFOR4MOVAH,09HINT21HMOVDX,OFFSETINFOR5INFOR5段偏移地址【運行后5EXIT:】MOVAH,09HINT21HMOVDX,OFFSETINFOR6MOVAH,09HINT21HMOVAH,01HINT21HCMPAL,'1'JEPandaCMPAL,'2'JECatCMPAL,'3'JERabbitCMPAL,'4'JEPigCMPAL,'5'JEPENDJMPOtherPanda:MOVDX,OFFSETINFOR7MOVAH,09HINT21HJMPPENDCat:MOVDX,OFFSETINFOR8MOVAH,09HINT21HJMPPENDRabbit:MOVDX,OFFSETINFOR9MOVAH,09HINT21HJMPPENDPig:MOVDX,OFFSET MOVAH,09HINT21HJMPPENDOther:MOVDX,OFFSET MOVAH,09HINT21HJMPPENDPEND:MOVAH,4CHINT21HCODEENDSENDSTART2、從鍵盤輸入一字符，判斷該字符是小寫字母、大寫字母、數字或其它字符。若輸入為小寫字母，顯示“YouInputaLowercaseLetter！”；若輸入為大寫字母，顯示“YouInputaUppercaseLetter！”“YouInputaDigit！”“YouInputOtherLetter！”。編程指導0?9ASCII30H?39HASCII41H?5AH，ASCII61H?7AH。本題目將字符分為小寫字母、大寫字ASCII碼值判斷其所屬類型，并顯09HDOS功能調用，接收鍵01HDOS功能調用。YYYYYYYY顯示提示信息“PleasePressAnyKeytoinputaletter”1開始結束素、、(AL)’0’(AL)=’9’(AL)’A’(AL)=’Z’(AL)’a’(AL)=’z’流程圖源程序DATA INFOR1DB0AH,0DH,"PleasePressAnyKeytoinputaletter:$"INFOR2DB0AH,0DH,"Youinputalowercaseletter!$"INFOR3DB0AH,0DH,"YouinputaUppercaseletter!$"INFOR4DB0AH,0DH,"YouinputaDigit!$"INFOR5DB0AH,0DH,"YouinputOtherletter!$"DATAENDSCODE ASSUMECS:CODE,DS:DATASTARTMOVAX,DATA；顯示信息“PleasePressAnyKeytoinputaletter”的指令序列以及接收從鍵盤輸入一個字符的指令序列MOVDS,AXMOVDX,OFFSETINFOR1MOVAH,09HINT21HMOVAH,01HINT21HCMPAL,'0'JBOTHERCMPAL,'9'JBEDIGITCMPAL,'A'JBOTHERCMPAL,'Z'JBEUPPERCMPAL,'a'JBOTHERCMPAL,'z'JBEJMPPENDLOWER；顯示“YouInputaLowercaseLetter！”的指令序列MOVDX,OFFSETINFOR2MOVAH,09HINT21HJMPPEND；注意執行完一個分支后應使程序跳出UPPER:；顯示“YouInputaUppercaseLetter”的指令序列MOVDX,OFFSETINFOR3MOVAH,09HINT21HJMPPENDDIGIT:；顯示“YouInputaDigit!”的指令序列MOVDX,OFFSETINFOR4MOVAH,09HINT21HJMPPENDOTHER；顯示“Y