CS201 Assignment 3 Solution 2020 -Stshine

CS201 Assignment 3 Solution 2020 -Stshine.blogspot.com

CS201 Assignment No3 Fall 2019 Solution file has been uploaded on Stshine.blogspot.com. Student can download the solution file form below link. Edit the file and then upload it in .cpp extension. otherwise student get grade 0.

Instructions

Please read the following instructions carefully before submitting assignment:

It should be clear that your assignment will not get any credit if:

o Assignment is submitted after due date.

o Submitted assignment does not open or file is corrupt.

o Assignment is copied (From internet/students).

Software allowed to develop Assignment

Dev C++

Objectives:

In this assignment, the students will learn:
How to make Class while dealing with real life problems
How to associate functions with Class.
How to implement switch statement for Class based functions.
How to deal with file handling.
How to manipulate already created file.

Assignment Submission Instructions

You are required to submit only .cpp file on the assignments interface of CS201 at VU-LMS.

Assignment submitted in any other format will not be accepted and will be graded with zero marks.

Problem Statement

Write a console-based employee management system through binary File Handling (In order to observe data security, we use binary file format so that data cannot be read directly from the TXT file) which will perform management actions of Employee by taking input from user by showing following three options:

Press 1 to ADD AN EMPLOYEE.
Press 2 to DISPLAY FILE DATA.
Press 3 to INCREASE EMPLOYEE SALARY.

After dealing with each option, show prompt to user and continue the program until user press other than ‘y’

Instructions to write C++ program:

Ø Use Class Employee to declare all Employee’s belongings.

Ø Make a EMPLOYEE.TXT file for saving Employee records

Ø Each time program runs, check and delete EMPLOYEE.TXT file if already exists.

Ø Switch statement will be implemented to perform multiple conditions and to perform different actions based on the conditions. i.e. Option 1, 2 and 3.

Ø Write functions to perform tasks given in options.

Download or Copy Below code:

#include<iostream>
#include<iostream>
#include<fstream>
#include<conio.h>
#define filename "EMPLOYEE.TXT"
using namespace std;
class Employee {
int employee_code;
string employee_name;
int employee_salary;
public:
Employee() 
{}
void enterDetails()
{
    int code;
 cout<<"Enter employee code: ";
 cin>>code;
    cout<<"Enter name: ";
    cin.ignore();
 cin.getline(name,sizeof(name));
 cout<<"Enter salary: ";
 cin>>salary;
 noOfEmployes++;
 eCode=noOfEmployes;
}
 int getSalary() 
{
 return salary;
}
 void setSalary(int sal) 
{
 this->salary=sal;
}
 void printDetails() 
{
 cout<<eCode<<"  "<<name<<"\t"<<salary;
}
 private:
 int eCode;
 char name[50];
 int salary;
 static int noOfEmployes;
} 
    anEmployee;
 int Employee::noOfEmployes=0;
 void addEmployee();
 void displayRecord();
 void updateSalary();
 int main() 
{
 int choice;
 char c='y';
 ifstream file(filename);
 if(file) {
 file.close();
 remove(filename);
}
 do 
   {
    cout<<"ENTER CHOICE\n";
    cout<<"1.ADD AN EMPLOYEE\n";
    cout<<"2.DISPLAY FILE DATA\n";
    cout<<"3.INCREASE EMPLOYEE SALARY\n";
    cout<<"Make a choice: ";
    cin>>choice;
  switch(choice) 
     {
    case 1:
     addEmployee();
    break;
    case 2:
     displayRecord();
    break;
    case 3:
     updateSalary();
    break;
    default:
    cout<<"Error: Wrong choice Entered\n";
   }
    cout<<"Do you want to continue ? :";
    c=getche();
    cout<<endl;
   } 
  while(c=='y');
  system("pause");
   }
  void addEmployee() 
     {
    ofstream file(filename,ios::binary|ios::app);
  if(!file) 
   {
    cout<<"ERROR IN OPENING FILE\n";
return;
   } 
  else   {
    anEmployee.enterDetails();
    file.write((char*)&anEmployee,sizeof(Employee));
    file.close();
    cout<<"Record added sucessfully.\n";
   }
   }
void displayRecord() 
   {
    ifstream file(filename,ios::binary);
  if(!file) 
     {
    cout<<"Error in opening file.\n";
 return;
   } 
  else
            {
  while(file.read((char*)&anEmployee,sizeof(Employee)))
            {
    anEmployee.printDetails();
    cout<<endl;
   }
    file.close();
   }
   }
void updateSalary() 
   {
    fstream file(filename,ios::binary|ios::in|ios::out);
 if(!file) 
    {
    cout<<"Error in opening file.\n";
 return;
   }
    int eCode,sHike;
    cout<<"Enter employee code: ";
    cin>>eCode;
    cout<<"Salary hike? ";
    cin>>sHike;
    file.seekg(sizeof(anEmployee)*(eCode-1),ios::beg);
    file.read((char*)&anEmployee,sizeof(Employee));
    anEmployee.setSalary(sHike+anEmployee.getSalary());
    file.seekp(sizeof(anEmployee)*(eCode-1),ios::beg);
    file.write((char*)&anEmployee,sizeof(Employee));
    cout<<"Salary updated successfully.\n";
            }

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CS201 Assignment 3 Solution 2020 -Stshine