Answer to Question #180396 in C++ for Aryaman

Question

Write a program  to create a structure employee having name, id, salary. Create a file “employee.txt” and open in append mode. Write the detail of 5 employee into a file and read the data from the file and display name of employee having highest salary on screen

Answer 1

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>

struct employee
{
    int         id;
    std::string name;
    int         salary;
};

int main()
{
    const int EMPLOYEES_COUNT = 5;
    const std::string FILE_NAME = "employee.txt";
    
    employee employees[EMPLOYEES_COUNT] = 
        {
            {1, "Robert Baratheon",   10000},
            {2, "Jaime Lannister",     3000},
            {3, "Cersei Lannister",    5000},
            {4, "Daenerys Targaryen", 15000},
            {5, "Jorah Mormont",       1000}
        };

    std::ofstream file1(FILE_NAME, std::ios::app);

        if(!file1)
        {
            std::cerr << "Error: open file 'employee.txt' for appending\n";
            return 1;
        }

    for(int i=0; i<EMPLOYEES_COUNT; ++i)
    {
        file1 << employees[i].id << " "
              << employees[i].salary << " "
              << employees[i].name << "\n";
    }

    file1.close();

    std::ifstream file2(FILE_NAME);

        if(!file2)
        {
            std::cerr << "Error: open file 'employee.txt' for reading\n";
            return 1;
        }

    employee highestSalaryEmployee = {-1, "", -1};

    std::string line;
    while(std::getline(file2, line))
    {
        std::istringstream ist(line);
        employee tmp;
        ist >> tmp.id >> tmp.salary;
        std::getline(ist, tmp.name);

        tmp.name = tmp.name.substr(1);
        
        if(tmp.salary > highestSalaryEmployee.salary)
        {
            highestSalaryEmployee = tmp;
        }
    }    

    std::cout << "Name of employee having highest salary: "
              << highestSalaryEmployee.name
              << " (" << highestSalaryEmployee.salary << ")\n";

    return 0;
}