Searching for an element in the linked list

#include<stdio.h>
#include<malloc.h>

struct node * addelement(struct node * ,int);
void display(struct node *);
void search(struct node *, int);

struct node

{

        int data;
        struct node *ptr;
};

int main()
{

        int a,b,num;
        struct node *head;
        printf(" \n Enter the elements to be added to the linked list ");
        scanf("%d %d",&a,&b);
        head=NULL;
	head=addelement(head,a);
        head=addelement(head,b);
        display(head);
        printf("\n The element to be searched in the list ");
        scanf("%d",&num);
        search(head,num);
}

struct node * addelement(struct node *head,int info)
{

        struct node *newnode;
        newnode=(struct node *)malloc(sizeof(struct node));
        newnode->data=info;
        if(head==NULL)
        {

                newnode->ptr=NULL;

                return newnode;
        }
        else

        {
                newnode->ptr=head;
                return newnode;
        }
}

void display(struct node *head)
{

        while(head!=NULL)
        {
                printf("%d\t",head->data);
                head=head->ptr;
        }
}

void search(struct node *head,int x)

{       int flag=0;
        while(head!=NULL)
        {

                if(head->data==x)
                {
                        flag=1;
                        break;
                }
                else
                {

                        head=head->ptr;
                }
        }

        if(flag==1)

        printf("\n The element %d is found in the list",x);

	else

        printf("\n The element is not present in the list \n");

}
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