#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void addToStart();
void addToEnd();
void printList();
void removeNodeAt();
void createList();
void menu();
int option;
struct node
{
char cName [50];
int cNumber;
char tDescrip [50];
struct node *next;
}*newnode, *display, *temp, *list, *prev, *head, *tail;
main()
{
do
{
menu();
switch (option)
{
case 1: addToStart();
break;
case 2: addToEnd();
break;
case 3: printList();
break;
case 4: removeNodeAt();
break;
case 5: break;
}
}while (option !=5);
}
void menu()
{
printf ("Linked List\n");
printf ("1. Add a new node to the beginning\n");
printf ("2. Add a new node to the end\n");
printf ("3. Print out the entire list\n");
printf ("4. Remove a node from the list\n");
printf ("5. Quit program\n");
printf ("Please select your option\n");
scanf ("%d", &option);
}
void createList()
{
list = NULL;
}
void addToStart()
{
newnode = (struct node*)malloc(sizeof(struct node));
printf ("Enter the customer name :");
scanf ("%s", newnode->cName);
printf ("\nEnter customer number :");
scanf ("%d", &newnode->cNumber);
printf ("\nEnter transaction description :");
scanf ("%s", newnode->tDescrip);
newnode->next = NULL;
if(list==NULL)
list = newnode;
else if (list != NULL && newnode < list)
{
newnode->next = list;
list = newnode;
}
else
{
temp = list;
while (temp != NULL)
{
if (newnode > temp)
{
prev = temp;
temp = temp->next;
}
}
newnode->next = prev->next;
prev->next = newnode;
}
}
void addToEnd()
{
newnode = (struct node*)malloc(sizeof(struct node));
printf ("Enter the customer name :");
scanf ("%s", newnode->cName);
printf ("\nEnter customer number :");
scanf ("%d", &newnode->cNumber);
printf ("\nEnter transaction description :");
scanf ("%s", newnode->tDescrip);
newnode->next = NULL;
if(list==NULL)
list = newnode;
else if (list != NULL && newnode < list)
{
newnode->next = NULL;
if (head == NULL) {
head = newnode;
tail = newnode;
} else {
tail->next = newnode;
tail = newnode;
}
}
}
void printList()
{
system("cls");
if (list==NULL)
printf ("\nList is empty");
else
{
display = list;
printf ("Customer name \t Customer number \t Transaction Description\n");
while (display != NULL)
{
printf ("%s \t\t %d \t\t\t %s", display->cName, display->cNumber, display->tDescrip);
display = display->next;
}
}
printf ("\n\n");
}there are showing output of add to start, but when i use the add to end, there are no output coming out,but there are no errors, what happen?
