C Program to add two polynomials using array

C Program to add two polynomials using array | Adding 2 polynomials in C | Addition of polynomials in C | Assignment to addition of polynomials in C



#include
#include
#define MAX 10
struct term
{
int coeff;
int exp;
};
struct poly
{
struct term t[10];
int totalterms;
};
void initpoly(struct poly*);
void polycreate(struct poly*,int c,int e);
struct poly addpoly(struct poly,struct poly);
void display(struct poly);
void main()
{
struct poly p1,p2,p3;
clrscr();
initpoly(&p1);
initpoly(&p2);
initpoly(&p3);
polycreate(&p1,1,7);
polycreate(&p1,2,6);
polycreate(&p1,3,5);
polycreate(&p1,4,4);
polycreate(&p1,5,2);
polycreate(&p2,1,4);
polycreate(&p2,1,3);
polycreate(&p2,1,2);
polycreate(&p2,1,1);
polycreate(&p2,2,0);
p3=addpoly(p1,p2);
printf("\n First polynomial :\n ");
display(p1);
printf("\n Second polynomial :\n ");
display(p2);
printf("\n\n Resultant Polynomial :\n");
display(p3);
getch();
}
/* Initializes elements of struct poly */
void initpoly(struct poly *p)
{
int i;
p->totalterms=0;
for(i=0;i {
p->t[i].coeff=0;
p->t[i].exp=0;
}
}

/* Add the term of polynomial to the array t */
void polycreate(struct poly *p,int c,int e)
{
p->t[p->totalterms].coeff=c;
p->t[p->totalterms].exp=e;
(p->totalterms)++;
}

/* DISPLAY the polynomial equation */
void display(struct poly p)
{
int flag=0,i;
for(i=0;i {
if(p.t[i].exp != 0)
printf("%d x^%d + ",p.t[i].coeff,p.t[i].exp);
else
{
printf("%d",p.t[i].coeff);
flag=1;
}
}
if(!flag)
printf("\b\b");
}
/* ADD two polynomials p1 and p2 */
struct poly addpoly(struct poly p1,struct poly p2)
{
int i,j,c;
struct poly p3;
initpoly(&p3);
if(p1.totalterms>p2.totalterms)
c=p1.totalterms;
else
c=p2.totalterms;
for(i=0,j=0;i<=c;p3.totalterms++)
{
if(p1.t[i].coeff==0 && p2.t[j].coeff==0)
break;
if(p1.t[i].exp>=p2.t[j].exp)
{
if(p1.t[i].exp==p2.t[j].exp)
{
p3.t[p3.totalterms].coeff=p1.t[i].coeff + p2.t[j].coeff;
p3.t[p3.totalterms].exp=p1.t[i].exp;
i++;
j++;
}
else
{
p3.t[p3.totalterms].coeff=p1.t[i].coeff;
p3.t[p3.totalterms].exp=p1.t[i].exp;
i++;
}
}
else
{
p3.t[p3.totalterms].coeff=p2.t[j].coeff;
p3.t[p3.totalterms].exp=p2.t[j].exp;
j++;
}
}
return p3;
}



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History Of C..

In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
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printf ("\t\t\t\"Life is Good...\"\n");
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