实验3分支和循环程序设计

实验3分支和循环程序设计实验目的：熟练掌握分支和循环结构的设计方法，熟悉跳转和循环指令的使用方法。实验要求：按照要求编写程序，调试运行。实验内容：1、编写程序实现下面的算法：ifthenlowerCount+1;elseif(ch≥’A’)and(ch≤’Z’)thenupperCount+1elseotherCount+1;endifendif其中ch调用ReadChar输入，lowerCount,upperCount和otherCount的值用WriteUDecByte显示。2、编写程序从键盘输入一系列有符号数，找出其中的最大数和最小数，显示运行结果。建议算法如下：显示“Firstnumber?”;调用ReadSDecDword输入双字有符号数；minimum:=number;maximum:=number;while(显示“Anothernumber?(YorN)”)loopif(输入Y)then调用ReadSDecDword输入双字有符号数；if(number<minimum)thenminimum:=number;endifif(number>maximum)thenmaximum:=number;endifendwhile3-6题中任选一题:3、编写程序将EAX的内容转换为二进制字符串4、编写程序将EAX的内容转换为十六进制字符串5、编写程序将EAX的内容转换为无符号十进制字符串6、编写程序将EAX的内容转换为有符号十进制字符串，负数字符串以“-“引导。7-10题中任选一题:7、编写程序将二进制字符串表示的数据存入EAX寄存器8、编写程序将十六进制字符串表示的数据存入EAX寄存器9、编写程序将十进制字符串表示的无符号数据存入EAX寄存器10、编写程序将十进制字符串表示的有符号数据存入EAX寄存器实验步骤及程序：1、编写程序实现下面的算法：.386.modelflat,stdcall.datalowerCountword0upperCountword0otherCountword0chabyte?promortbyte"Pleaseinputthelengthofstring:",0promort1byte"Pleaseinputastring:",0dh,0ah,0promort2byte"lowerCount=",0promort3byte"upperCount=",0promort4byte"otherCount=",0textbyte50dup(?).codestart:WriteStringPromortReadSDecDwordecxWriteStringpromort1ReadStringtextmovebx,0again:moval,byteptrtext[ebx]cmpal,'A'jbotcmpal,'Z'jnaupcmpal,'a'jbotcmpal,'z'jnaloot:incotherCountjmpnextup:incupperCountjmpnextlo:inclowerCountnext:incebxloopagainWriteStringpromort2WriteUDecwordlowerCountWriteCrlfWriteStringpromort3WriteUDecwordupperCountWriteCrlfWriteStringpromort4WriteUDecwordotherCountWriteCrlfretendstart2、编写程序从键盘输入一系列有符号数，找出其中的最大数和最小数，显示运行结果。3.386.modelflat,stdcall.datapromotbyte"Firstnumber?:",0permot1byte"Anothernumber(YorN)?",0permot2byte"Anothernumber:",0permot3byte"mininum=",0permot4byte"maxinum=",0minnumdword?maxnumdword?.codestart:WriteStringPromotReadSDecDwordeaxmovminnum,eaxmovmaxnum,eaxagain:WriteStringpermot1ReadCharalsubal,'N'cmpal,0jzdonexoreax,eaxWriteStringpermot2ReadSDecDwordeaxcmpeax,minnumjlmincmpeax,maxnumjgmaxmin:movminnum,eaxjmpagainmax:movmaxnum,eaxjmpagaindone:WriteStringpermot3WriteSDecDwordminnumWriteCrlfWriteStringpermot4WriteSDecDwordmaxnumWriteCrlfretendstart3、编写程序将EAX的内容转换为二进制字符串.386.modelflat,stdcall.stack.datapromortbyte"Pleaseinputnum:",0BinStrbyte32dup(?),0.codestart:WriteStringpromortReadSDecDwordeaxmovecx,32movebx,offsetBinStragain:shleax,1jcnext1movbyteptr[ebx],'0'jmpnextnext1:movbyteptr[ebx],'1'next:incebxdececxjnzagainWriteStringBinStrretendstart8、编写程序将十六进制字符串表示的数据存入EAX寄存器.386.modelflat,stdcall.datapromortbyte"Plearseinputthestring(endwith@):",0dh,0ah,0promort1byte"ERRORINPUT!",0arraybyte35dup(?).codestart:WriteStringpromortmovecx,0xoreax,eaxReadStringarrayagain:xorebx,ebxmovbl,array[ecx]cmpbl,'@';判断字符串是否结束jzendincmpbl,'0'；判断输入的字符是否为‘0’-‘9’jberror0cmpbl,'9'jbedone1subbl,'A'；判断输入的字符是否为A-Fcmpbl,0jberror0cmpbl,6jaerror0roleax,4；是A-F，则将字符转化为10-15addebx,10addeax,ebxjmpn2done1:roleax,4andebx,0fhaddeax,ebxn2:incecxjmpagainendin:WriteCrlfWriteUDecDwordeaxjmpdoneerror0:WriteStringpromort1done:retendstartHYPERLINK"/retype/zoom/f11a