Student information through double linked list

#include<stdio.h>
#include<malloc.h>
#include<string.h>
struct student
{
        char name[10];
        int m1;
        int m2;
        struct student *llink;
        struct student *rlink;
};

struct student * addelement(struct student *,char name[],int,int,int,int);
void display( struct student *,char name[]);

int main()
{

        int num,i,m1,m2;
        struct student *head;
        head=NULL;
        char name[10];
        printf("\n Enter the number of students data to be entered  :");
        scanf("%d",&num);
        for(i=1;i<=num;i++)
        {
                printf("Enter the name of the student :");
                scanf("%s",name);
                printf("\n Enter the marks in maths  :");
                scanf("%d",&m1);
                printf("\n Enter the marks in science : ");
                scanf("%d",&m2);
                head=addelement(head,name,m1,m2,i,num);
        }

        printf("\n Enter the student name to be searched : ");
        scanf("%s",name);
        display(head,name);

}

struct student * addelement(struct student *head,char name[10],int m1,int m2,int i,int num)
{

         struct student *newnode;

                newnode=(struct student *)malloc(sizeof(struct student));

                strcpy(newnode->name,name);
                newnode->m1=m1;
                newnode->m2=m2;

                if(i==num)
		{
                        newnode->llink=NULL;
                        newnode->rlink=head;
                        head->llink=newnode;
                        return newnode;
                }



                else if(head==NULL)

                {

                        newnode->rlink=NULL;
                        newnode->llink=NULL;
                        return newnode;

                }
                else

                {
                        head->llink=newnode;
                        newnode->rlink=head;
                        return newnode;
                }
}

          void display(struct student *p3,char name[10])

         {
                  struct student *temp;
                  temp=p3;
                  int flag=0;

                if(p3==NULL)
                {

                        printf("\n The list is empty \n");

                }

                while(p3!=NULL)

                {
                       printf("\n Student Name: %s, Maths Marks: %d,Science Marks: %d",p3->name,p3->m1,p3->m2);

                        if(p3->m1>=90 && p3->m2>=90)
                        {
                                printf("\n Student Name: %s, Maths Marks: %d,Science Marks: %d",p3->name,p3->m1,p3->m2);
                                p3=p3->rlink;
                        }
                        else
                        {

                        p3=p3->rlink;

                        }


                }

                p3=temp;

                while(p3!=NULL)
                {
                        if(strcmp(p3->name,name)==0)
                        {
                                flag=1;
                                break;
                        }

                        else
                        {
                                p3=p3->rlink;
                        }
                }

                if(flag==1)
                {

                        printf("\n The student information exists in the database \n ");
                }
                else
                {
                        printf("\n The student information does not exist in the database \n");
		}
}