Question

C++ Linked Lists

You have been hired by Employees. Inc to write an employee management system. The following are your specifications: Write a program that uses the following linked lists: bullet empId: a linked list of seven long integers to hold employee identification numbers. The array should be initialized with the following numbers: 5658845 4520125 7895122 8777541 8451277 1302850 7580489 bullet hours: a linked list of seven integers to hold the number of hours worked by each employee bullet payRate: any data structure (your choice) of seven doubles to hold each employee's hourly pay rate bullet wages: a linked list of seven doubles to hold each employee's gross wages The program should display each employee number and ask the user to enter that employee's hours and pay rate. It should then calculate the gross wages for that employee (hours times pay rate) and store them in the wages array. After the data has been entered for all the employees, the program should display each employee's identification number and gross wages. Input Validation: Do not accept negative values for hours or numbers less than 15.00 for pay rate. When the program starts, it should ask the user to enter the employee IDs. There should be no limit on the number of IDs the user can enter. Enter an employee ID number: 5658845 Do you want to enter another one? y Enter an employee ID number: 4520125 Do you want to enter another one? y Enter an employee ID number: 7895122 Do you want to enter another one? N Enter the requested data for employee number 5658845. Hours worked: 23 Pay rate: $12.34 Pay rate must be 15.00 or more. Please re-enter: $16.78 Enter the requested data for employee number 4520125. Hours worked: 32 Pay rate: S23.45 Enter the requested data for employee number 7895122. Hours worked: 21 Pay rate: $23.45 Employee Wages Employee #5658845 $ 385.94 Employee #4520125 $ 750.40 Employee #7895122 $ 492.45

Answer 1

Code:

#include<iostream>
using namespace std;
struct Emp
{
int empid;
int hours;
double payrate;
double wage;
Emp *next;
}*head,*tail;

insert_node( int id)
{
if(head==NULL)
{
head=new Emp;
head->empid=id;
head->hours=0;
head->payrate=0;
head->wage=0;
head->next=NULL;
tail=head;
}
else
{
Emp *node=new Emp;
node->empid=id;
node->hours=0;
node->payrate=0;
node->wage=0;
node->next=NULL;
tail->next=node;
tail=tail->next;
}
}
void print_wages()
{
cout<<"\n---------------------------------\n";
cout<<"Employee\t\twages\n\n";

struct Emp *itr=head;
while(itr)
{
cout<<"Employee #"<<itr->empid<<"\t"<<"$ "<<itr->wage<<endl;
itr=itr->next;
}
}

void take_input()
{
struct Emp * itr;
itr=head;
while(itr)
{
double hr,pr;
cout<<"\nEnter the requested data for employee number "<<itr->empid;

do
{
cout<<"\n\tHours worked:";
cin>>hr;
if(hr <0)
{
cout<<"invalid hours: Please reenter:\n";
}
}while(hr<=0);

itr->hours=hr;
do
{
cout<<"\n\tPay rate: $";
cin>>pr;
if(pr<15)
{
cout<<"Pay rate is less that 15 please reenter \n";
}

}while (pr<15);

itr->payrate=pr;
itr->wage=pr*hr;
itr=itr->next;
}
}
int main()
{
struct Emp * node;
char ch;
do
{
int id;
cout<<"\nEnter an employee ID number:";
cin>>id;
insert_node(id);
cout<<"\nDo you want to enter another one?";
cin>>ch;

}while(ch=='y'||ch=='Y');

take_input();
print_wages();
return 1;
}

Output:

Enter an employee ID number: 5658845 Do you want to enter another one?y Enter an employee ID number:4520125 Do you want to enter another one?y Enter an employee ID number:7895122 Do you want to enter another one?n Enter the requested data for employee number 5658845 Hours worked: 23 Pay rate: $12.34 Pay rate is less that 15 please reenter Pay rate: $16.78 Enter the requested data for employee number 4520125 Hours worked: 32 Pay rate: $23.45 Enter the requested data for employee number 7895122 Hours worked: 21 Pay rate: $23.45 Employee Wages Employee #5658845 Employee #4520125 Employee #7895122 385.94 $750.4 $492.45 Process returned 1 (0x1) execution time 44.644 s Press any key to continue.