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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//#include <conio.h>
struct Node
{
char first[20];
struct Node *next;
};
struct Node *start = NULL;
struct Node *t, *u;
void clear_buf(){
int c;
while((c = fgetc(stdin)) != '\n' && c != EOF){}
}
struct Node *createNode() //this function creates a newnode everytime it's called
{
struct Node *create = malloc(sizeof(struct Node));
return create;
}
int length() //to measure the length of the list.
{
int count = 0;
struct Node *temp;
temp = start;
while (temp != NULL)
{
count++;
temp = temp->next;
}
return count;
}
void insertend() //to insert a node at the end of the list.
{
int l;
struct Node *newnode = createNode();
printf("Enter Name : ");
clear_buf(); //clear buffer before input
fgets(newnode->first, sizeof(newnode->first), stdin);
newnode->first[strcspn(newnode->first, "\n")] = '\0'; //remove '\n'
if (start == NULL)
{
start = t = newnode;
start->next = NULL;
printf("%s successfully added to the list!", newnode->first);
}
else
{
t = start;
while (t->next != NULL)
t = t->next;
t->next = newnode;
t = newnode;
t->next = NULL;
printf("%s successfully added to the list!", newnode->first);
}
l = length();
printf("The length of the list is %d", l);
}
void display() //to display the list
{
const struct Node *dis;
dis = start;
if (start == NULL)
{
//system("cls");
printf("No elements to display in the list");
}
else
{
//system("cls");
for (int j = 1; dis != NULL; j++)
{
printf("%d.) %s\n", j, dis->first);
dis = dis->next;
}
}
}
int menu() //this is just a menu it returns the user input to the main function
{
int men;
printf("\nPlease select a choice from the options below :-\n\n");
printf("1.) Add at the end of the list\n");
printf("2.) Display list\n");
printf("3.) exit\n");
printf(" Enter your choice : ");
scanf("%d", &men);
return men;
}
int main()
{
while (1)
{
//system("cls");
switch (menu())
{
case 1:
insertend();
break;
case 2:
display();
break;
case 3:
exit(0);
default:
//system("cls");
printf("Ivalid choice!Please select an appropriate option!");
clear_buf();
break;
}
getch();
}
return 0;
}
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