assignment of Chapter 4.docx

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assignment of Chapter 4.docx

assignmentofChapter4

4.17

#include

usingnamespacestd;

intnumber;

intlargest;

intmain()

{

intcounter=1;

cout<<"Enter10numbers:

"<

while(counter<=10)

{

cin>>number;

if(number>largest)

largest=number;

else

largest=largest;

counter++;

}

cout<<"Thelargestnumberis:

"<

}

4.24

a).

#include

usingnamespacestd;

intx;

inty;

intmain()

{cout<<"pleaseenterx:

"<

cin>>x;

cout<<"pleaseentery:

"<

cin>>y;

if(x!

=5,y!

=8)

cout<<"@@@@"<

else

{

cout<<"####"<

cout<<"$$$$"<

cout<<"&&&&"<

}

}

b).

#include

usingnamespacestd;

intx;

inty;

intmain()

{cout<<"pleaseenterx:

"<

cin>>x;

cout<<"pleaseentery:

"<

cin>>y;

if(x==5,y==8)

cout<<"@@@@"<

else

{

cout<<"####"<

cout<<"$$$$"<

cout<<"&&&&"<

}

}

c).

#include

usingnamespacestd;

intx;

inty;

intmain()

{cout<<"pleaseenterx:

"<

cin>>x;

cout<<"pleaseentery:

"<

cin>>y;

if(x==5,y==8)

{

cout<<"@@@@"<

cout<<"&&&&"<

}

else

{

cout<<"####"<

cout<<"$$$$"<

cout<<"&&&&"<

}

}

d).

#include

usingnamespacestd;

intx;

inty;

intmain()

{cout<<"pleaseenterx:

"<

cin>>x;

cout<<"pleaseentery:

"<

cin>>y;

if(x!

=5,y!

=7)

{

cout<<"@@@@"<

cout<<"&&&&"<

}

else

{

cout<<"####"<

cout<<"$$$$"<

cout<<"&&&&"<

}

}

4.25

#include

usingnamespacestd;

intsize;

intmain()

{

cout<<"Pleseenterthesizeofthesquare:

"<

cin>>size;

if(size>1&&size<20)

{

for(inti=1;i<=size;i++)

cout<<"*";

cout<

for(intn=1;n<=size-2;n++)

{

cout<<"*";

{

for(intj=1;j<=size-2;j++)

cout<<"";

}

cout<<"*"<

}

for(intk=1;k<=size;k++)

cout<<"*";

cout<

}

else

cout<<"Pleseenterthecorrectsize!

"<

}

4.26

#include

usingnamespacestd;

intk;

intmain()

{

cout<<"Pleaseenterafive-digitintegers:

"<

cin>>k;

if(k>10000&&k<99999)

{

inta=k/10000;

intb=(k/1000)%10;

intc=(k/100)%10;

intd=(k/10)%10;

inte=k%10;

if(a==e&&b==d)

cout<<"Thefive-digitintegersisapalindrome."<

else

cout<<"Thefive-digitintegersisnotapalindrome."<

}

else

cout<<"Pleseenterthecorrectfive-digitintegers!

"<

}

4.27

#include

#include

usingnamespacestd;

inta;

intsum;

doublen;

intmain()

{

cout<<"Pleseenteranintegerwhichconsistsof1and0:

"<

cin>>a;

sum=a%10;

n=1;

for(n;a/pow(10.0,n)>1;n++)

{

sum=sum+((a/10)%10)*pow(2.0,n);

}

cout<<"Theresultis:

\n"<

}

 

4.32

#include

usingnamespacestd;

doublea;

doubleb;

doublec;

intmain()

{

cout<<"Pleseenterthesizeofthethreesides:

"<

cin>>a>>b>>c;

if(a>0&&b>0&&c>0)

{

if(a-b>=0)

{

if(a+b>c&&a-b

cout<<"Thethreesidescanbethesidesofarighttriangle."<

else

cout<<"Thethreesidescan'tbethesidesofarighttriangle."<

}

else

{

if(a+b>c&&b-a

cout<<"Thethreesidescanbethesidesofarighttriangle."<

else

cout<<"Thethreesidescan'tbethesidesofarighttriangle."<

}

}

else

cout<<"Plesecheckwhetherthesizesyouenteredareright."<

}

4.34

#include

usingnamespacestd;

intcode;

intmain()

{

cout<<"Pleseenterafour-numbercode:

"<

cin>>code;

if(code<=9999&&code>=1000)

{

inta=code%10;

intb=(code/10)%10;

intc=(code/100)%10;

intd=(code/1000)%10;

a=(a+7)%10;

b=(b+7)%10;

c=(c+7)%10;

d=(d+7)%10;

cout<<"Theresultis:

\n"<

}

else

cout<<"Pleaseenteracorrectfour-numbercode!

"<

}

4.35

a)

#include

usingnamespacestd;

intn;

ints;

intmain()

{

cout<<"Pleaseenteraninteger:

"<

cin>>n;

s=n;

while(n>=2)

{

s=s*(n-1);

n--;

}

cout<<"Theresultis:

\n"<

}

b)

#include

usingnamespacestd;

doublefactorial(doublei,doublek)

{

if(i==1)

k=i;

else

{

k=i;

while(i>=2)

{

k=k*(i-1);

i--;

}

}

returnk;

}

 

intmain()

{

doublea;

doublei=1;

doublek=1;

doubles=1;

cout<<"Pleaseentertheaccuracyofe:

"<

cin>>a;

while(i<=a)

{

s=s+1/factorial(i,k);

i++;

}

cout<<"Theresultis:

\n"<

}

c)

#include

#include

usingnamespacestd;

doublefactorial(doublei,doublek)

{

if(i==1)

k=i;

else

{

k=i;

while(i>=2)

{

k=k*(i-1);

i--;

}

}

returnk;

}

 

intmain()

{

doublea;

doublei=1;

doublek=1;

doubles=1;

doublex;

cout<<"Pleaseenterx:

"<

cin>>x;

cout<<"Pleaseentertheaccuracyofe:

"<

cin>>a;

while(i<=a)

{

s=s+pow(x,i)/factorial(i,k);

i++;

}

cout<<"Theresultis:

\n"<

}

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