分支程序设计实验报告分支结构程序设计

分支程序设计实验报告分支结构程序设计.....实验二分支程序设计一、实验目的：1、学习分支程序的设计方法2PC过程二、实验环境：硬件环境IBM/PC及其兼容机软件环境操作系统DOSEDITMASM.EXE连接程序LINK.EXE调试程序DEBUG.EXE三、实验容：1、在屏幕上显示如下信息：1 2 Cat3 4 Pig5 EXIT(Pleasechoose1,2,3,4or5) 1，显示“Ilikepanda”2，显示“Ilikecat”3，显示“Ilikerabbit”4，显示“Idon’tlikepig”5，程序直接结束；若输入其它字符，显示“Youpressanerrorkey!”后程序结束。YYYYYNNNNN开始选项用户输入Al=1Al=2Al=3Al=4Al=5Youpressanerrorkey结束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；数据段结束CODE

；代码段开始ASSUMECS:CODE,DS:DATA；段寻址STARTMOVAX,DATA;dataax中MOVDS,AXds赋值MOVDX,OFFSETINFOR1INFOR1段偏移地址【运行后1Panda:】MOVAH,09HINT21HMOVDX,OFFSETINFOR2MOVAH,09HINT21HMOVDX,OFFSETINFOR3MOVAH,09HINT21HMOVDX,OFFSETINFOR4MOVAH,09HINT21HMOVDX,OFFSETINFOR5INFOR5段偏移地址【运行后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、从键盘输入一字符，判断该字符是小写字母、大写字母、数字或其它字符。若输入为小写字母，显示“YouInputaLowercaseLetter！”；若输入为大写字母，显示“YouInputaUppercaseLetter！”“YouInputaDigit！”“YouInputOtherLetter！”。编程指导0?9ASCII30H?39HASCII41H?5AH，ASCII61H?7AH。本题目将字符分为小写字母、大写字ASCII码值判断其所属类型，并显09HDOS功能调用，接收键01HDOS功能调用。YYYYYYYY显示提示信息“PleasePressAnyKeytoinputaletter”1开始结束素、、(AL)’0’(AL)=’9’(AL)’A’(AL)=’Z’(AL)’a’(AL)=’z’流程图源程序DATA INFOR1DB0AH,0DH,"PleasePressAnyKeytoinputaletter:$"INFOR2DB0AH,0DH,"Youinputalowercaseletter!$"INFOR3DB0AH,0DH,"YouinputaUppercaseletter!$"INFOR4DB0AH,0DH,"YouinputaDigit!$"INFOR5DB0AH,0DH,"YouinputOtherletter!$"DATAENDSCODE ASSUMECS:CODE,DS:DATASTARTMOVAX,DATA；显示信息“PleasePressAnyKeytoinputaletter”的指令序列以及接收从键盘输入一个字符的指令序列MOVDS,AXMOVDX,OFFSETINFOR1MOVAH,09HINT21HMOVAH,01HINT21HCMPAL,'0'JBOTHERCMPAL,'9'JBEDIGITCMPAL,'A'JBOTHERCMPAL,'Z'JBEUPPERCMPAL,'a'JBOTHERCMPAL,'z'JBEJMPPENDLOWER；显示“YouInputaLowercaseLetter！”的指令序列MOVDX,OFFSETINFOR2MOVAH,09HINT21HJMPPEND；注意执行完一个分支后应使程序跳出UPPER:；显示“YouInputaUppercaseLetter”的指令序列MOVDX,OFFSETINFOR3MOVAH,09HINT21HJMPPENDDIGIT:；显示“YouInputaDigit!”的指令序列MOVDX,OFFSETINFOR4MOVAH,09HINT21HJMPPENDOTHER；显示“Y