# Answer to Question #9769 in C++ for John

Question #9769

Can someone help me with this

#include <iostream>

class polynomial

{

public:

// CONSTANT

static const int CAPACITY = 15;

// CONSTRUCTOR

polynomial(double c = 0.0, int degree = 0);

// MEMBER FUNCTIONS

void add_to_coef(double amount, int degree);

void assign_coef(double c, int degree);

void clear();

double coefficient(int degree) const;

void print();

int degree() const;

private:

// DATA MEMBERS

double coef[CAPACITY];

int largest_degree;

};

#include "poly.h"

#include <cmath>

using namespace std;

static const int CAPACITY = 15;

// Start implementing your functions here

#include <iostream>

class polynomial

{

public:

// CONSTANT

static const int CAPACITY = 15;

// CONSTRUCTOR

polynomial(double c = 0.0, int degree = 0);

// MEMBER FUNCTIONS

void add_to_coef(double amount, int degree);

void assign_coef(double c, int degree);

void clear();

double coefficient(int degree) const;

void print();

int degree() const;

private:

// DATA MEMBERS

double coef[CAPACITY];

int largest_degree;

};

#include "poly.h"

#include <cmath>

using namespace std;

static const int CAPACITY = 15;

// Start implementing your functions here

Expert's answer

#pragma once

#include <iostream>

class polynomial

{

public:

& //CONSTANT

& static const int CAPACITY = 15;

& // CONSTRUCTOR

& polynomial(double c = 0.0, int degree = 0);

& // MEMBER FUNCTIONS

& void add_to_coef(double amount, int degree);

& void assign_coef(double c, int degree);

& void clear();

& double coefficient(int degree) const;

& void print();

& int degree() const;

private:

& // DATA MEMBERS

& double coef[CAPACITY];

& int largest_degree;

};

#include "poly.h"

#include <cmath>

#include<process.h>

using namespace std;

polynomial::polynomial(double c , int degree )

{

if (degree<CAPACITY){

largest_degree=degree;

for(int i=0;i<=degree;i++)

coef[i]=c;

}

else cout<<"Bad degree";exit(0);//because it is very important to know

& //did we create element or not.

}

void polynomial::add_to_coef(double amount, int degree)

{

if(degree<=largest_degree)

coef[degree]+=amount;

else cout<<"bad range";

}

void polynomial::assign_coef(double c, int degree)

{

if(degree<=largest_degree)

coef[degree]=c;

else cout<<"bad range";

}

void polynomial::clear()

{

for (int i=0;i<largest_degree;++i)

coef[i]=0;

/*you may clear it by largest_degree=0; (it's up to you)*/

}

double polynomial::coefficient(int degree) const

{if(degree<=largest_degree)

return coef[degree];

else cout<<"bad range";

return -1;

}

void polynomial::print()

{for (int i=largest_degree;i>0;--i)

{if(coef[i]!=0)cout<<coef[i]<<"x^"<<i<<'+';}

if(coef[0]!=0)cout<<coef[0];

}

int polynomial::degree() const

{return largest_degree;}

#include <iostream>

class polynomial

{

public:

& //CONSTANT

& static const int CAPACITY = 15;

& // CONSTRUCTOR

& polynomial(double c = 0.0, int degree = 0);

& // MEMBER FUNCTIONS

& void add_to_coef(double amount, int degree);

& void assign_coef(double c, int degree);

& void clear();

& double coefficient(int degree) const;

& void print();

& int degree() const;

private:

& // DATA MEMBERS

& double coef[CAPACITY];

& int largest_degree;

};

#include "poly.h"

#include <cmath>

#include<process.h>

using namespace std;

polynomial::polynomial(double c , int degree )

{

if (degree<CAPACITY){

largest_degree=degree;

for(int i=0;i<=degree;i++)

coef[i]=c;

}

else cout<<"Bad degree";exit(0);//because it is very important to know

& //did we create element or not.

}

void polynomial::add_to_coef(double amount, int degree)

{

if(degree<=largest_degree)

coef[degree]+=amount;

else cout<<"bad range";

}

void polynomial::assign_coef(double c, int degree)

{

if(degree<=largest_degree)

coef[degree]=c;

else cout<<"bad range";

}

void polynomial::clear()

{

for (int i=0;i<largest_degree;++i)

coef[i]=0;

/*you may clear it by largest_degree=0; (it's up to you)*/

}

double polynomial::coefficient(int degree) const

{if(degree<=largest_degree)

return coef[degree];

else cout<<"bad range";

return -1;

}

void polynomial::print()

{for (int i=largest_degree;i>0;--i)

{if(coef[i]!=0)cout<<coef[i]<<"x^"<<i<<'+';}

if(coef[0]!=0)cout<<coef[0];

}

int polynomial::degree() const

{return largest_degree;}

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