Untitled

#include <stdio.h>
#include <stdlib.h>
#define no 2

struct Node {
        int c, x, y;
        struct Node* next;
};

void insert(struct Node** head, int nc, int px, int py) {
        struct Node* new_node = (struct Node*) malloc(sizeof(struct Node));
        new_node -> c = nc;
        new_node -> x = px;
        new_node -> y = py;
        new_node -> next = (*head);
        (*head) = new_node;
}

void display(struct Node* node) {
        while(node != NULL) {
                printf("%d(x^%d)(y^%d)", node -> c, node -> x, node -> y);
                node = node -> next;
                printf(" + ");
        }
}

void add(struct Node* ans, struct Node* n1, struct Node* n2) {
        while(n1 != NULL) {
                while(n2 != NULL) {
                        if(n1 -> x == n2 -> x && n1 -> y == n2 -> y) {
                                insert(&ans, n1->c + n2->c, n1->x, n1->y);
                                printf("%d", n1->c + n2->c);
                        }
                        n2 = n2 -> next;
                }
                n1 = n1 -> next;
        }
}
       
void main() {
        struct Node *p1 = NULL, *p2 = NULL, *sum = NULL;
        int n, x, y;
        printf("Enter the values of the linked-list, in the format <coefficent power-of-x power-of-y>:\nP1:\n");
        for(int i = 0; i < no; i++) {
                scanf("%d %d %d", &n, &x, &y);
                insert(&p1, n, x, y);
        }
        printf("P2:\n");
        for(int i = 0; i < no; i++) {
                scanf("%d %d %d", &n, &x, &y);
                insert(&p2, n, x, y);
        }
        display(p1);
        printf("\n");
        display(p2);
        printf("\n");
        add(sum, p1, p2);
        display(sum);
}