Add file IO to program 4. Create a text file that will storeemployee information

Question

Add file IO to program 4. Create a text file that will storeemployee information from the program code. The program will havethe ability to load the array with the data from the file.



There are two required functions: LoadEmployee & SaveEmployeewhich look like the following, or something like the following. Thefollowing is also a possible base structure for the program.



#include "Employee.h"



void LoadEmployee(FILE *input, Employee *employee)

{}



void SaveEmployee(FILE *output, Employee employee)

{}



char InputMode()

{

    // prompt user for input mode

    // return input mode

    return 'f';

}



void EntryPoint()

{

    // create employee array

    // create file

    switch (InputMode())

    {

    case 'f':

    case 'F':

        // file

        // load from file

        break;

    case 'k':

    case 'K':

        // keyboard

        // load fromkeyboard

        break;

    default:

        //

        break;

    }



    // main process loop

    // update employee record

    // show employee record

    // save records to file

}





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

PREVIOUS PROGRAMME 4

#include <stdio.h>

#include<stdlib.h>

#include <conio.h>

#include<string.h>

struct employee

{char name[10];

double rate;

double hours;

double tax;

double baseSalary;

double overtimePay;

double grossSalary;

double netPay;

}person[5];

void input(struct employee[]);

void calcpay(struct employee[]);

double calctax(struct employee);

void print(struct employee[],double);

int main()

{int i;

double total=0;

input(person);

calcpay(person);

for(i=0;i<5;i++)

    {person[i].tax=calctax(person[i]); //calculatingtax

    person[i].netPay=person[i].grossSalary-person[i].tax; //calculatingnet pay

     total+=person[i].grossSalary;

     }

print(person,total);

getch();

return 0;

}

void input(struct employee e[])

{int i;

for(i=0;i<5;i++)

{printf("Enter name: ");

scanf("%s",&e[i].name);

printf("Enter hourly rate: ");

scanf("%lf",&e[i].rate);

printf("Enter hours worked: ");

scanf("%lf",&e[i].hours);

//if the inputs are -1 break out of the loop

if(e[i].hours==-1||e[i].rate==-1||strcmp(e[i].name,"-1")==0)

{

exit(0);

}

}









}







void calcpay(struct employee e[])



{int i;



for(i=0;i<5;i++)



if(e[i].hours>40)



{



e[i].grossSalary=((e[i].hours-40)*(1.5*e[i].rate)+(e[i].rate*40));//gross pay



e[i].baseSalary=e[i].rate*40; //base salary incase of overtime



e[i].overtimePay= ((e[i].hours-40)*(e[i].rate*1.5)); //calculatingovertime pay



}



else



{



e[i].grossSalary=e[i].hours*e[i].rate;



e[i].baseSalary=e[i].hours*e[i].rate;



e[i].overtimePay =0;



}



}



double calctax(struct employee e)



    {return e.grossSalary*.2;



     }







void print(struct employee e[],double total)



{int i;



printf(" ");



for(i=0;i<5;i++)



    {printf("Pay to: %s ",e[i].name);



     printf("Hourly rate:%.2f ",e[i].rate);



     printf("Hours worked:%.2f ",e[i].hours);



     printf("Gross Pay:$%.2f ",e[i].grossSalary);



     printf("Base Pay:$%.2f ",e[i].baseSalary);



     printf("Overtime Pay:$%.2f ",e[i].overtimePay);



     printf("Taxes paid:$%.2f ",e[i].tax);



     printf("Net Pay:$%.2f ",e[i].netPay);



     }



     printf(" Total pay:$%.2f ",total);



}

Explanation / Answer

void LoadEmployee(FILE *input, Employee *employee)


{    if(fread(employee,1,sizeof(Employee),input) <= 0)    printf("Error in loading from inputfile");    else    printf("Data successfulyloaded");             }




//here is load and storefunction, please provide Employee.h for completeprogram.
void SaveEmployee(FILE *output, Employee employee) {    if(fwrite(&employee,1,sizeof(Employee),output) <= 0)    printf("Error in writtingfile");    else    printf("Data successfuly written tofile");                } void LoadEmployee(FILE *input, Employee *employee)


{    if(fread(employee,1,sizeof(Employee),input) <= 0)    printf("Error in loading from inputfile");    else    printf("Data successfulyloaded");             }




//here is load and storefunction, please provide Employee.h for completeprogram.
void SaveEmployee(FILE *output, Employee employee) {    if(fwrite(&employee,1,sizeof(Employee),output) <= 0)    printf("Error in writtingfile");    else    printf("Data successfuly written tofile");                }

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