# CPP Program For Addition of Two Polynomial Expressions

#### Aim:

Write a C++ program for the addition of two polynomial expressions

#### Program:

```#include<iostream.h>
#include<conio.h>
class poly
{
struct
{ int coef;
int expo;
} term[20];
int degree;
public:
void input()
{ int i;
cout<<"Enter number of terms";
cin>>degree;
cout<<"Enter coefficients and exponents for " << degree <<"
terms"<<endl;
for(i=0;i<degree;i++)
cin>>term[i].coef>>term[i].expo;
}
{
int i,j,k,l;
degree=A.degree+B.degree;
i=0;j=0;k=0;
while(i<A.degree && j<B.degree)
{
if( A.term[i].expo<B.term[j].expo)
{ term[k].coef=B.term[j].coef;
term[k].expo=B.term[j].expo;
j++;
k++;
}
if( A.term[i].expo>B.term[j].expo)
{ term[k].coef=A.term[i].coef;
term[k].expo=A.term[i].expo;
i++;
k++;
}
if( A.term[i].expo==B.term[j].expo)
{ term[k].coef=A.term[i].coef+B.term[j].coef;
term[k].expo=A.term[i].expo;
i++;
j++;
k++;
}
}
if(i<A.degree)
{ for(l=i; l<A.degree; l++)
{ term[k].coef=A.term[l].coef;
term[k].expo=A.term[l].expo;
k++;
}
}
if(j<B.degree)
{ for(l=j; l<B.degree; l++)
{ term[k].coef=B.term[l].coef;
term[k].expo=B.term[l].expo;
k++;
}
}
degree=k;
}
void display()
{ int i;
cout<<"polynomial is"<<endl;
for(i=0;i<degree;i++)
cout<<term[i].coef<<"x"<<term[i].expo<<" ";
}
};
main()
{
poly A,B,C;
cout<<"Enter Polynomial A:"<<endl;
A.input();
cout<<"Enter Polynomial B:"<<endl;
B.input();
C.display();
getch();
}
```

#### Output:

```Enter Polynomial A:
Enter number of terms 3
Enter coefficients and exponents for 3 terms
3 2 4 1 6 0
Enter Polynomial B:
Enter number of terms 3
Enter coefficients and exponents for 3 terms
5 2 5 1 8 0
Polynomial is
8x2 9x1 14x0 ```

#### Result:

Thus, the addition of two polynomial expressions was successfully executed.