Circular Linked list in C with Append and display options
This is simpler version of Circular linked list program. If you need more options, please check another program http://thecodecracker.com/c-programming/circular-linked-list/.
/*Circular Linked list in C with Append and display options */
#include<stdio.h>
#include<malloc.h>
void append();
void display();
struct node
{
int a;
char n[20];
struct node *next;
}*last;
int main()
{
int ch;
do
{
printf("\n1.append 2.display 3.Exit : ");
scanf("%d",&ch);
switch(ch)
{
case 1:
append();
break;
case 2:
display();
break;
}
}while(ch!=3);
}
void append()
{
struct node *newnode;
newnode=(struct node*)malloc(sizeof(struct node));
if(newnode==NULL)
{
printf("\n memory not allocated");
}
printf("enter the val : ");
scanf("%d",&newnode->a);
printf("enter the name : ");
scanf(" %s",newnode->n);
newnode->next=NULL;
if(last==NULL)
{
last=newnode;
newnode->next=last;
}
else
{
newnode->next=last->next;
last->next=newnode;
}
last=newnode;
}
void display()
{
struct node *temp;
if(last == NULL)
{
printf("list is empty\n");
}
else {
for(temp=last->next;temp!=last;temp=temp->next)
{
printf("%d %s\n",temp->a,temp->n);
}
printf("%d %s\n",temp->a,temp->n);
}
}