Linked List representations of Employee Records

 

//Linked List representations of Employee Records

 

#include<stdlib.h>

#include<stdio.h>

struct emp

{

            int empno;

            char *empname;

            long int salary;

            struct emp *next;

}*start = NULL;

 void insert()

{

            struct emp *temp,*ptr;

            temp = malloc(sizeof(struct emp));

            printf("\n Employee Number: ");

            scanf("%d",&temp->empno);

            printf("\n Employee Name: ");

            scanf("%s",temp->empname);

            printf("\n Salary: ");

            scanf("%ld",&temp->salary);

 

            temp->next =NULL;

             if(start==NULL)

                        start=temp;

            else

            {

                        ptr=start;

                        while(ptr->next !=NULL)

                                    ptr=ptr->next ;

                        ptr->next =temp;

            }

}

 

void del()

{

struct emp *ptr=start;

while (ptr->next->next!=NULL)

            ptr=ptr->next;

ptr->next=NULL;

printf("Deletion is done at the end of record\n");

}

void display()

{

            int count=0;

            struct emp *ptr;

                        ptr=start;

                        printf("\n\nEmployee Details\n");

                        printf("-------------------\n");

                        while(ptr!=NULL)

                        {

                                    printf("Employee Number: %d\n",ptr->empno);

                                    printf("Employee Name: %s\n",ptr->empname);

                                    printf("Salary: %ld\n\n", ptr->salary);

                                    count++;

                                    ptr=ptr->next ;

                        }

            printf("\nTotal number of employees is %d\n", count);

            }

 

void main()

{        

int ch;

            printf("Employee Record Details\n");

            printf("-----------------------\n");

            printf("\t 1. Insert a new record\n");

            printf("\t 2. Delete an existing record\n");

            printf("\t 3. Print employee records\n");

            printf("\t 4. Exit\n");

            do {

                        printf("\nEnter your choice [1..3]: ");

                        scanf("%d:",&ch);

                        switch(ch)

                        {

                        case 1:

                                   insert();

                                   break;

                        case 2:

                                    del();

                                    break;

                        case 3:

                                    display();

                                    break;

                        default:

                                    printf("Choose correct choice");

                        }

            } while (ch!=4);

}

OUTPUT

-------------

Employee Record Details

--------------------------------

         1. Insert a new record

         2. Delete an existing record

         3. Print employee records

         4. Exit

 

Enter your choice [1..3]: 1

 Employee Number: 1

 Employee Name: thej

 Salary: 250000

 

Enter your choice [1..3]: 1

 Employee Number: 2

 Employee Name: deebesh

 Salary: 206000

 

Enter your choice [1..3]: 3

Employee Details

----------------------

Employee Number: 1

Employee Name: thej

Salary: 250000

 

Employee Number: 2

Employee Name: deebesh

Salary: 206000

 

Total number of employees is 2

 

Enter your choice [1..3]: 2

Deletion is done at the end of record

 

Enter your choice [1..3]: 3

Employee Details

----------------------

Employee Number: 1

Employee Name: thej

Salary: 250000

 

 

 

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