REVERSE A SINGLY LINK LIST

Q.) REVERSE A SINGLY LINK LIST .

example--
link list={1,2,3,4,5,6,7}
output link list={7,6,5,4,3,2,1}


#include<stdio.h>
#include<stdlib.h>
int main()
{
    struct node
    {
        int data;
        struct node *next;
    }*head;
    struct node *temp;
    int num,i,item;
    head=NULL;
    printf("enter number of nodes of link list=");
    scanf("%d",&num);
    //creation of singly link list//
    for(i=0;i<num;i++)
    {
        scanf("%d",&item);
        if(head==NULL)
        {
            head=malloc(sizeof(struct node));
            head->data=item;
            //printf("%d ",head->data);
            temp=head;
        }
        else
        {
            temp->next=malloc(sizeof(struct node));
            temp->next->data=item;
            temp=temp->next;
        }
    }
    temp->next=NULL;
    temp=head;
    struct node *prevn = NULL;      //previous node
    struct node *currn = head;      //current node
    struct node *nextn = NULL;      //next node

   //In the loop, we need to change NextN to PrevN, PrevN to
   //CurrN and CurrN to NextN
    currn=head;
    //printf("%d ",head->data);
    while (currn!= NULL)
    {
        nextn = currn->next;
        currn->next = prevn;
        prevn = currn;
        currn = nextn;
    }
    temp=prevn;
    while(prevn!=NULL)
    {
        printf("%d ",prevn->data);
        prevn=prevn->next;
    }

}