Program added

C/program-83/README.md

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+## Program 83
+Program in C to represent polynomial expression in one variable using linked list.

C/program-83/polynomial.c

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+#include<stdio.h>
+#include<stdlib.h>
+
+struct poly
+{
+ int coeff;    
+ int exp;
+ struct poly *next;
+};
+
+void add(struct poly **p,int c,int e) // adding nodes for each order
+{
+ struct poly *new=*p,*temp;
+ new=(struct poly *)malloc(sizeof(struct poly));
+ new->coeff=c;
+ new->exp=e;
+ new->next=NULL;
+
+ if(*p==NULL)          // if start is null
+  *p=new;
+ else
+ {
+  struct poly *temp=*p;
+  while(temp->next!=NULL)     
+   temp=temp->next;
+  temp->next=new;
+ } 
+
+}
+
+void display(struct poly **p)    // for displaying each node that contains different order of X
+{
+struct poly*temp=*p;
+ while(temp!=NULL)
+ { 
+  printf("+%d",temp->coeff);
+  if(temp->exp!=0)
+  printf("x^%d",temp->exp);
+   temp=temp->next;
+ }
+}  
+
+int main()
+{
+  int co,ex;
+  char ch='y';
+  struct poly *start=NULL;
+  printf("Enter the polynomial from highest order to lowest\n");
+  while(ch=='y')
+  {
+     printf("Enter the coefficient of x:\n");
+     scanf("%d",&co);           
+     printf("enter the exponent of x:\n");
+     scanf("%d",&ex);
+     add(&start,co,ex);                //calling add function
+     printf("\n\tDo u want to add more (y/n)");
+     getchar();
+     scanf("%c",&ch);
+
+  }
+
+  printf("\n\tThe polynomial expression is:\t");
+  display(&start);       //final display
+  printf("\n");
+  return 0;
+}
+