Question

Write a menu-driven program to read 3 employees' information from a text file called “ EmployeeFile” for this example but that can be edited to add more employees later.
Each employee has a name field, ID fields, and a Salary Record.
The Salary Record has weekly hours, rate per hour, gross salary, Tax, and net salary field.

1.1 Implement the project with queue using pointers

1.2 Write push and pop functions for queue using pointers

C++

EmployeeField.txt example

John_Doe 123456 40 45 4500 200 4300
Billy_Bob 654321 40 200 4000 200 3800
Kate_Johnson 531642 40 300 12000 200 11800

please make sure it works on free compilers online like https://repl.it/languages/cpp to be tested.

Answer 1

Solution ::

I am adding the code with comments so that you can understand easily...

if you have any doubt, please let me know in the comment box...

thank you...

#include<iostream>
#include<cstdio>      //Header file
#include<stdlib.h>
using namespace std;
struct node{   //structure
        char  name[80];
        int id,w_hours,rate,gross,tax,netsal;
        struct node *link;
        };
void push(struct node **top,struct node data){        //push function
        struct node *temp;
        temp=(struct node *)malloc(sizeof(struct node));   //Allocating memory dynamically for new node
        for(int i=0;data.name[i]!='\0';i++)
                temp->name[i]=data.name[i];


        temp->id=data.id;
        temp->w_hours=data.w_hours;
        temp->rate=data.rate;
        temp->gross=data.gross;
        temp->tax=data.gross;
        temp->netsal=data.netsal;
        temp->link=*top;    //making link with top node
        *top=temp;   //storing address of top in temp
        }
void pop(struct node **top){   //pop function
        struct node *temp;
        if(*top==NULL){           //checking if stack is empty
                cout<<"\nStack is empty";
                return;
                }
        temp=*top;
        char*  name=temp->name;    //storing the name whose data will be popped
        *top = (*top)->link;
        free(temp);   //deallocating temp
        cout<<"\n Data of "<<name<<" is popped";
        }
void display(struct node *top){   //function display
        while(top!=NULL){   //loop will continue until top becomes null
                cout<<top->name<<"  "<<top->id<<"  "<<top->w_hours<<"  "<<top->rate<<"  "<<top->gross<<"  "<<top->tax<<"  "<<top->netsal<<endl;
                top=top->link;
                }
        }
int main(){
struct node *top=NULL,data;   //declaring variable
char c;
int choice;  //choice for menu
FILE *fp;   //fp is a file pointer
data.link=NULL;   //we do not need link part for storing data temporary
fp=fopen("EmployeeField.txt","r");   //opening file in read mode
do {            //loop will skip the first line of the file
  c = fgetc(fp);
} while (c != '\n');
while(!feof(fp)){    //loop will continue until end of file
                fscanf(fp,"%s%d%d%d%d%d%d",data.name,&data.id,&data.w_hours,&data.rate,&data.gross,&data.tax,&data.netsal);//reading from file
                push(&top,data);   //push operation
                }
display(top);  //display
while(1){   //menu loop
        cout<<"\nFor push,press 1...\nFor pop,press 2...\nEsle for exit press any key...   ";
        cin>>choice;   //taking input choice
        if(choice==1){    //if choice ==1 then push
                cout<<"\nEnter Data seperated by space \n";
                cin>>data.name>>data.id>>data.w_hours>>data.rate>>data.gross>> data.tax>>data.netsal;
                push(&top,data);
                display(top);
                }
        else if(choice == 2){    //if choice == 2 then pop
                pop(&top);
                display(top);
                }
        else
                break;
        }
return 0;

    Thank you::::