data structures - Basic Linked List operations in C -

i creating program perform basic linked list operations. right have wrote code inserting node @ front. ran program see working or not program terminating after accepting input node, prints message after switch. doesn't pause accepting input continuing operations (just before end of main())

here code :

#include <stdio.h> #include <stdlib.h>  struct linkedlist {     int num;     struct linkedlist *next; }; struct linkedlist *head = null;  void display();  void insertbeginning() {      struct linkedlist *obj;     int no;      obj = (struct linkedlist *)malloc(sizeof(struct linkedlist));      if(obj == null)     {         printf("\n overflow ");     }     else     {         printf("\n enter number = ");         scanf("%d", &no);          obj->num = no;          if(head == null)         {             head = obj;             obj->next = null;          }         else         {             obj->next = head;             head = obj;         }         } }  void display () {     struct linkedlist *head2 = head;     while(head2 != null)     {         printf("%d ->",head2->num);         head2=head->next;     }     printf("null \n"); }  int main() {      int choice;     char wish;       printf("\n 1. insert @ beginning");     printf("\n 2. insert @ end");     printf("\n 3. insert in between");     printf("\n 4. delete front");     printf("\n 5. delete end");     printf("\n 6. delete in between");     printf("\n 7. reverse");     printf("\n 8. sort ascending");     printf("\n 9. sort descending");     printf("\n 10.swap alternate elements");     printf("\n 11.display\n\n");          {         printf("\n enter option = ");         scanf("%d", &choice);          switch(choice)         {             case 1:                 insertbeginning();                 break;              case 2: //              insertend();                 break;              case 3: //              insertinbetween();                 break;              case 4: //              deletefront();                 break;              case 5: //              deleteend();                 break;              case 6: //              deleteinbetween();                 break;              case 7: //              reverse();                 break;              case 8: //              sortasc();                 break;              case 9: //              sortdesc();                 break;              case 10: //              swap();                 break;              case 11:                 display();                 break;              default:                 printf("\n wrong choice ");          }          printf("\n wish continue (y/n) = ");         scanf ("%c",&wish);     }while(wish == 'y' || wish =='y');     return 0; } 

in case, have change

 scanf ("%c",&wish); 

to

scanf (" %c",&wish); 

because, if don't include leading white-space before format specifier, consider remaining \n (newline) got generated , stored input buffer pressing enter key after first input. so, second scanf() won't wait user input.