分支程序設(shè)計(jì)實(shí)驗(yàn)報(bào)告

實(shí)驗(yàn)二分支程序設(shè)計(jì)一、實(shí)驗(yàn)?zāi)康模?、學(xué)習(xí)分支程序的設(shè)計(jì)方法2、熟悉在PC機(jī)上建立、匯編、連接、調(diào)試和運(yùn)行匯編語(yǔ)言程序的過(guò)程二、實(shí)驗(yàn)環(huán)境：硬件環(huán)境 IBM/PC 及其兼容機(jī)軟件環(huán)境 操作系統(tǒng)DOS編輯程序EDIT或其他編輯程序匯編程序MASM.EXE連接程序LINK.EXE調(diào)試程序DEBUG.EXE三、實(shí)驗(yàn)內(nèi)容：1、在屏幕上顯示如下信息：1------------------------Panda2------------------------Cat3------------------------Rabbit4------------------------Pig5------------------------EXIT(Pleasechoose1,2,3,4or5)-----若輸入1，顯示“Ilikepanda”后程序結(jié)束；若輸入2，顯示“Ilikecat”后程序結(jié)束；若輸入3，顯示“Ilikerabbit”后程序結(jié)束；若輸入4，顯示“Idon’tlikepig”后程序結(jié)束；若輸入5，程序直接結(jié)束；若輸入其它字符，顯示“Youpressanerrorkey!”后程序結(jié)束。1）流程圖開(kāi)始選項(xiàng)用戶輸入Al=1NAl=2NAl=3NNAl=4NAl=5N

YIlikepandaYIlikecatYIlikerabbitYI like do notYoupressanerrorkey結(jié)束2）源程序DATASEGMENTINFOR1DB0AH,0DH,"1-----------Panda:$"INFOR2DB0AH,0DH,"2-----------Cat:$"INFOR3DB0AH,0DH,"3-----------Rabbit;$"INFOR4DB0AH,0DH,"4-----------pig:$"INFOR5DB0AH,0DH,"5-----------EXIT:$"INFOR6DB0AH,0DH,"(pleasechoose1,2,3,4or5---):$"INFOR7DB0AH,0DH,"IlikePanda:$"INFOR8DB0AH,0DH,"IlikeCat:$"INFOR9DB0AH,0DH,"IlikeRabbit;$"INFOR10DB0AH,0DH,"Ilikepig:$"INFOR11DB0AH,0DH,"youpressanerrorkey!:$"DATAENDSCODESEGMENTASSUME CS:CODE,DS:DATASTART:MOVAX,DATAMOVDS,AXMOV DX,OFFSET INFOR1

；數(shù)據(jù)段結(jié)束；代碼段開(kāi)始；段尋址;將data的數(shù)據(jù)存入；為ds賦值；返回變量 INFOR1在屏幕上顯示字符

ax中段內(nèi)偏移地址【運(yùn)行后1-----------Panda:】MOVAH,09HINT21H

；執(zhí)行九號(hào)功能調(diào)用MOVDX,OFFSET

INFOR2MOVAH,09HINT21HMOVDX,OFFSET

INFOR3MOVAH,09HINT21HMOVDX,OFFSET

INFOR4MOVAH,09HINT21HMOVDX,OFFSET

INFOR5

；返回變量 INFOR5在屏幕上顯示字符

段內(nèi)偏移地址【運(yùn)行后5-----------EXIT: 】MOVAH,09HINT21HMOVDX,OFFSETMOVAH,09HINT21HMOVAH,01H

INFOR6INT21HCMPAL,'1'JE PandaCMPAL,'2'JE CatCMPAL,'3'JE RabbitCMPAL,'4'JEPigCMPAL,'5'JEPENDJMPOtherPanda:MOVDX,OFFSETINFOR7MOVAH,09HINT21HJMPPENDCat:MOVDX,OFFSETINFOR8MOVAH,09HINT21HJMPPENDRabbit:MOVDX,OFFSETINFOR9MOVAH,09HINT21HJMPPENDPig:MOVDX,OFFSETINFOR10MOVAH,09HINT21HJMPPENDOther:MOVDX,OFFSETINFOR11MOVAH,09HINT21HJMPPENDPEND: MOVAH,4CHINT21HCODE ENDSENDSTART2、從鍵盤(pán)輸入一字符，判斷該字符是小寫(xiě)字母、大寫(xiě)字母、數(shù)字或其它字符。若輸入為小寫(xiě)字母，顯示“YouInputaLowercaseLetter！”；若輸入為大寫(xiě)字母，顯示“YouInputaUppercaseLetter！”；若輸入為數(shù)字，顯示“YouInputaDigit！”；若輸入為其它字符，顯示“YouInputOtherLetter！”。1、編程指導(dǎo)數(shù)字09的ASCII碼為30H39H；大寫(xiě)字母的ASCII碼為41H5AH，小寫(xiě)字母的ASCII碼為61H7AH。本題目將字符分為小寫(xiě)字母、大寫(xiě)字母、數(shù)字及其它字符，根據(jù)鍵入字符的ASCII碼值判斷其所屬類型，并顯示相應(yīng)的信息。字符串顯示使用功能號(hào)為09H的DOS功能調(diào)用，接收鍵盤(pán)輸入的單個(gè)字符使用功能號(hào)為01H的DOS功能調(diào)用。2、流程圖及程序框圖1）流程圖開(kāi)始顯示提示信息“ PleasePressAnyKeytoinputaletter”及功能號(hào)為 1的接收鍵盤(pán)輸入單個(gè)字符的指令序列Y(AL)<’0’Y(AL)<=’9’輸入的是數(shù)字，顯示有關(guān)信息

Y(AL)<’AY(AL)<=’Z’Y輸入的是大寫(xiě)字母，顯示信息 (AL)<’a’Y(AL)<=’z’輸入的是小寫(xiě)字母，顯示信息 輸入的是其它字符，顯示信息結(jié)束2）源程序DATASEGMENTINFOR1DB0AH,0DH,"PleasePressAnyKeytoinputaletter:$"INFOR2DB0AH,0DH,"Youinputalowercaseletter!$"INFOR3DB0AH,0DH,"YouinputaUppercaseletter!$"INFOR4DB0AH,0DH,"YouinputaDigit!$"INFOR5DB0AH,0DH,"YouinputOtherletter!$"DATAENDSCODESEGMENTASSUME CS:CODE,DS:DATASTART: MOVAX,DATA ；顯示信息“PleasePressAnyKeytoinputaletter”的指令序列以及接收從鍵盤(pán)輸入一個(gè)字符的指令序列MOVDS,AXMOV DX,OFFSET INFOR1MOV AH,09HINT 21HMOVAH,01HINT21HCMP AL,'0'JBOTHERCMPAL,'9'JBEDIGITCMPAL,'A'JBOTHERCMPAL,'Z'JBEUPPERCMPAL,'a'JBOTHERCMPAL,'z'JBELOWERJMPPENDLOWER:；顯示“YouInputaLowercaseLetter！”的指令序列MOVDX,OFFSETINFOR2MOVAH,09HINT21HJMPPEND；注意執(zhí)行完一個(gè)分支后應(yīng)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“YouInputOtherLetter!”的指令序列MOV