C Program to create and display a polynomial | C Program

 Create and Display a polynomial | C Program

#include<stdio.h>

#include<stdlib.h>

struct node
{
    int coef;
    int exp;
    struct node *next;
};
struct node *start=NULL;

main()
{
    int i,coef,exp,choice=1;  // term=Number of terms in polynomial
    struct node *n,*temp;

    //creation of polynomial
    while(choice!=0)
    {
        n=malloc(sizeof(struct node));

        if(n==NULL)
        {
            printf("memory overflow");
            getch();
            exit(0);
        }

        else
        {
            printf("\n\n\tEnter coefficient and exponent respectively for polynomial: ");
            scanf("%d%d",&coef,&exp);

            n->coef=coef;
            n->exp=exp;
            n->next=NULL;
            if(start==NULL)
            {
                start=n;
                temp=n;
            }
            else
            {
                temp->next=n;
                temp=n;
            }
            printf("Continue adding more terms to the polynomial list?(Yes = 1/No = 0): ");
            scanf("%d",&choice);
        }
    }


    // for display
    if(start==NULL)
        printf("\n\t** No Polynomial Exist **");

    else
    {
        temp=start;

        printf("\n\tPolynomial Expression:\n\t\t\tP(x) =  ");

        while(temp!=NULL)
        {
            if(temp->coef>0)
                printf("+");
            printf("%dx^%d",temp->coef,temp->exp);
            temp=temp->next;
        }
    }
    getch();
}

OUTPUT: