Insert a node at the nth position of a link list - C++ Programming Language. The following code shows how to insert a node at the nth position of the linked list using c++ programming language.
Code:
#include<iostream>
using namespace std;
struct Node
{
int data;
Node* next;
};
Node *head;
// Ia an item to Link list
void Insert(int x, int p)
{
Node *temp = new Node();
temp->data = x;
temp->next = NULL;
if (p == 1) {
temp->next = head;
head = temp;
return;
}
Node *temp1 = head;
for (int i=0; i<p-2; i++) {
temp1 = temp1->next;
}
temp->next = temp1->next;
temp1->next = temp;
}
// Print link list
void Print()
{
Node *temp = head;
cout << "List is : ";
while (temp != NULL) {
cout << temp->data << " ";
temp = temp->next;
}
cout << endl;
}
int main()
{
head = NULL;
cout << "How many numbers : ";
int n, x, p;
cin >> n;
for (int i=0; i<n; i++) {
cout << "Enter the number " << endl;
cin >> x >>p;
Insert(x, p);
Print();
}
return 0;
}