div.cpp
Language: C++
Last Modified: 2021-05-21 1:54:44 AM UTC
File Size: 6735 bytes
Last Modified: 2021-05-21 1:54:44 AM UTC
File Size: 6735 bytes
http://www.penguinstew.ca/example/Division/div.cpp
include<iostream>
include<string>
include<cmath>
usingnamespacestd;
constintMAXDEC=65;
constintNOPRINT=1;
constintDECPRINT=2;
intgetDigitsintnumber;
intgetNextDigitintnumber;
intmainvoid{
stringtempInput;
boolreplay=true;
Loopuntiluserquits
whilereplay{
input
intdividend;
intdivisor;
Digitcounts
intendDigits;
intsorDigits;
Thelistofcurrentvalues
intcurList[MAXDEC1];
Thelistofcalculatedmultipliedvalues
intmulList[MAXDEC1];
Thelistofdigitsmakinguptheresult
intoutput[MAXDEC1];
intendCopy=0;
intremain=0;
intcurrent=0;
intspace=0;
intbase=4;
Flags
boolinput=false;
boolstart=false;
replay=false;
cout<<Format:AB=C<<endl;
cout<<AandBmustbelessthan100000000<<endl;
cout<<AandBmustbegreaterthan0<<endl;
Getthedividendfrominput
whileinput{
input=true;
cout<<PleaseenteranumberforA:<<endl;
Gettheinputandconvertittoanint
cin>>tempInput;
dividend=atoitempInputc_str;
checkifdividendisincorrectrange
ifdividend<=0||dividend>=100000000{
input=false;
cout<<InvalidA:<<endl;
}
}
input=false;
Getthedivisorfrominput
whileinput{
input=true;
cout<<PleaseenteranumberforB:<<endl;
Gettheinputandconvertittoanint
cin>>tempInput;
divisor=atoitempInputc_str;
checkifdivisorisincorrectrange
ifdivisor<=0||divisor>=100000000{
input=false;
cout<<InvalidB:<<endl;
}
}
input=false;
Getthecountofthedigitsinbothnumbersandmakeacopyofthedividend
endDigits=getDigitsdividend;
sorDigits=getDigitsdivisor;
endCopy=dividend;
Clearthelists
forintj=0;j<MAXDEC1;j{
output[j]=NOPRINT;
curList[j]=NOPRINT;
mulList[j]=NOPRINT;
}
Loopthroughallthedigitsofthenumber
forinti=0;i<endDigits;i{
Getthenewvaluebyaddingtheremainderandthenextdigit
current=remain10getNextDigitendCopy;
forintj=0;j<10;j{
Findthevalueforjsuchthatj1multipliedbythedivisorisgreaterthanthecurrentvalue
ifj1divisor>current{
ifj=0andwehaventstartedprintingthentellittoprintnothing
ifj==0start==false{
output[i]=NOPRINT;
curList[i]=NOPRINT;
mulList[i]=NOPRINT;
}else{
ifstart==false{Ifj=0andnotstartedprintingstart
start=true;
curList[i]=NOPRINT;
}else{Ifthisisntthefirstlineaddcurrenttothelist
curList[i]=current;
}
Determinetheresultsandaddthemtotheirperspectivelists
mulList[i]=jdivisor;
output[i]=j;
}
Determinenextremainder
remain=currentjdivisor;
break;
}
}
}
ifstart==false{Ifstillhaventstartedsetpreviousoutputto0
start=true;
mulList[endDigits1]=0;
output[endDigits1]=0;
}
Markthedecimalpoint
output[endDigits]=DECPRINT;
curList[endDigits]=DECPRINT;
mulList[endDigits]=DECPRINT;
LoopthroughthedecimaldigitsuntilmaxDecorresultis0
forinti=endDigits1;i<=MAXDEC;i{
Getthenewvaluefromtheremainder
current=remain10;
forintj=0;j<10;j{
Findthevalueforjsuchthatj1multipliedbythedivisorisgreaterthanthecurrentvalue
ifj1divisor>current{
Addcurrenttothelist
curList[i]=current;
Determinetheresultsandaddthemtotheirperspectivelists
mulList[i]=jdivisor;
output[i]=j;
remain=currentjdivisor;
break;
}
}
ifremain==0{Iftheremainderis0settherestoftheoutputtonotprintandstop
break;
}
}
cout<<endl;
Spacerforthedivisor
forinti=0;i<sorDigits3;i{
cout<<;
}
Printtheresultingvalue
forinti=0;i<MAXDEC;i{
ifoutput[i]==NOPRINT
cout<<;
elseifoutput[i]==DECPRINT
cout<<;
else
cout<<output[i];
}
cout<<endl;
Printouttheoperation
cout<<divisor<<<<dividend<<endl;
Printouttheprocess
forinti=0;i<MAXDEC;i{
ifmulList[i]==NOPRINT{Ifcurrentnumberisnoprintskip
continue;
}
ifmulList[i]==DECPRINT{Ifcurrentnumberisdecimalmovethebasebackone
base=base1;
continue;
}
printthecurrentvalue
ifcurList[i]=NOPRINT{
space=sorDigitsigetDigitscurList[i]base;
forintj=0;j<space;j{
cout<<;
}
cout<<curList[i]<<endl;
}
Printthemultipliedvalue
space=sorDigitsigetDigitsmulList[i]base;
forintj=0;j<space;j{
cout<<;
}
cout<<mulList[i]<<endl;
}
cout<<endl;
cout<<Doyouwanttodivideanothernumber?YN:;
Gettheinput
cin>>tempInput;
checkifstringstartswithyorY
iftempInput[0]==y||tempInput[0]==Y{
replay=true;
}
}
return0;
}
Getthenumberofdigitsinthenumber
intgetDigitsintnumber{
forinti=1;i<=8;i{
Multiplythenumberby01andthentruncatebycastingtoanint
number=intnumber01;
Repeatutilthenumberhasranoutofdigits
ifnumber==0{
Returniwhichwillbethenumberofdigits
returni;
}
}
return0;
}
returnstheleftmostdigit
intgetNextDigitintnumber{
Getthenumberofdigitsinthenumber
intdig=getDigitsnumber;
Powerandinversepower
intpower=1;
doubleinvPower=1;
Loopthroughthenumberofdigitstogetthevalues
forinti=0;i<dig1;i{
power=power10;
invPower=invPower01;
}
Getthelastdigit
intlast=intnumberinvPower;
Removethelastdigitfromthenumber
number=numberpowerlast;
returnlast;
}
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