A payroll program that I wrote a long time ago using C programming language and Dev C++.
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Program Listing
/* Lydia's Store Payroll System in C
Programmer : Jake Rodriguez Pomperada, MAED-IT, MIT
Date : July 9, 2022
wwww.jakerpomperada.com and www.jakerpomperada.blogspot.com
jakerpomperada@gmail.com
Bacolod City, Negros Occidental Philippines
*/
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <ctype.h>
#include <string.h>
struct employee
{
char emp_id[100];
char emp_name[100];
char position[100];
char department[100];
float basic_pay,allowance;
float philhealth,sss_gsis,withholding_tax;
float pag_ibig,total_deductions;
float gross_pay,net_pay;
};
/* creating an object info of the structure in C */
struct employee info ;
main()
{
/* File Handling routine here */
FILE *fp, *ft ;
char another, choice ;
char emp_id[100];
int flag=0;
long int recsize ;
/* Creating and opening payroll.dat */
fp = fopen ( "PAYROLL.DAT", "rb+" ) ;
if ( fp == NULL )
{
fp = fopen ( "PAYROLL.DAT", "wb+" ) ;
if ( fp == NULL )
{
puts ( "Cannot open file" ) ;
exit(0) ;
}
}
recsize = sizeof ( info ) ;
/* declarion of menu of the employees payroll system in C here */
while (1)
{
system("CLS");
printf("\n");
printf("\n======================================");
printf("\n");
printf("\nLYDIA'S STORE PAYROLL SYSTEM IN C");
printf("\n");
printf("\n======================================");
printf("\n\n");
printf ( "1. ADD EMPLOYEE RECORDS" ) ;
printf("\n");
printf ( "2. DISPLAY EMPLOYEE RECORDS" ) ;
printf("\n");
printf ( "3. UPDATE EMPLOYEE RECORDS" ) ;
printf("\n");
printf ( "4. PRINT EMPLOYEES PAYSLIP" ) ;
printf("\n");
printf ( "5. DELETE EMPLOYEE RECORDS" ) ;
printf("\n");
printf ( "6. QUIT PROGRAM" ) ;
printf("\n\n");
printf ( "SELECT YOUR CHOICE : " ) ;
fflush (stdin) ;
choice = getche( ) ;
switch ( choice ) /* Selection of Options of Employees Payroll System */
{
case '1' :
fseek ( fp, 0 , SEEK_END ) ; /* This portion of the code will ADD EMPLOYEE RECORDS */
another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
printf("\n\n");
printf("=== Add Employees Record in the Database ===");
printf("\n\n");
printf("Enter Employee ID : ");
scanf("%s",&info.emp_id);
printf("Enter Employee Name : ");
fflush (stdin) ;
gets(info.emp_name);
printf("Enter Employee Position : ");
fflush (stdin) ;
gets(info.position);
printf("Enter Employee Department : ");
fflush (stdin) ;
gets(info.department);
printf("Enter Basic Pay : ");
scanf("%f",&info.basic_pay);
printf("Enter Allowance : ");
scanf("%f",&info.allowance);
info.gross_pay = (info.basic_pay+info.allowance);
printf("\n");
printf("Employee's Gross Pay : PHP %6.2f",info.gross_pay);
printf("\n\n");
printf("Enter Philhealth : ");
scanf("%f",&info.philhealth);
printf("Enter SSS/GSIS : ");
scanf("%f",&info.sss_gsis);
printf("Enter Withholding Tax : ");
scanf("%f",&info.withholding_tax);
printf("Enter PAG-IBIG : ");
scanf("%f",&info.pag_ibig);
info.total_deductions = (info.philhealth+info.sss_gsis
+ info.withholding_tax+info.pag_ibig);
info.net_pay = (info.gross_pay-info.total_deductions);
printf("\n");
printf("Employee's Total Deductions : PHP %6.2f",info.total_deductions);
printf("\n\n");
printf("Employee's Net Pay : PHP %6.2f",info.net_pay);
fwrite ( &info, recsize, 1, fp ) ;
printf("\n\n");
printf ( "\nAdd another Record (Y/N) " ) ;
fflush ( stdin ) ;
another = toupper(getche()) ;
}
break ;
case '2' : /* This portion of the code will VIEW EMPLOYEE RECORDS */
system("cls");
rewind (fp);
printf("\n");
printf("=== View of Employee's Records in the Database ===");
printf("\n");
while ( fread ( &info, recsize, 1, fp ) == 1 ) {
printf("\n");
printf("\n Employee ID : %s",info.emp_id);
printf("\n Employee Name : %s",info.emp_name);
printf("\n Position : %s",info.position);
printf("\n Department : %s",info.department);
printf("\n Basic Pay : PHP %6.2f",info.basic_pay);
printf("\n Allowance : PHP %6.2f",info.allowance);
info.gross_pay = (info.basic_pay+info.allowance);
printf("\n\n");
printf("\n Employee's Gross Pay : PHP %8.2f",info.gross_pay);
printf("\n");
printf("\n Philhealth : PHP %6.2f",info.philhealth);
printf("\n SSS/GSIS : PHP %6.2f",info.sss_gsis);
printf("\n Witholding Tax : PHP %6.2f",info.withholding_tax);
printf("\n PAG-IBIG : PHP %6.2f",info.pag_ibig);
info.total_deductions = (info.philhealth+info.sss_gsis
+ info.withholding_tax+info.pag_ibig);
info.net_pay = (info.gross_pay-info.total_deductions);
printf("\n\n");
printf("Employee's Total Deductions : PHP %6.2f",info.total_deductions);
printf("\n\n");
printf("Employee's Net Pay : PHP %6.2f",info.net_pay);
printf("\n\n");
}
system("pause");
break ;
case '3' : /* This portion of the code will UPDATE EMPLOYEE RECORDS */
rewind (fp);
another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
printf("\n");
printf("=== Update Employee Records in the Database ===");
printf("\n\n");
printf("\n");
printf("Enter Employee ID Number : ");
scanf("%s",&emp_id);
rewind ( fp ) ;
while ( fread ( &info, recsize, 1, fp ) == 1 )
{
if ( strcmp ( info.emp_id, emp_id ) == 0 )
{
printf("Enter Employee ID : ");
scanf("%s",&info.emp_id);
printf("Enter Employee Name : ");
fflush (stdin) ;
gets(info.emp_name);
printf("Enter Employee Position : ");
fflush (stdin) ;
gets(info.position);
printf("Enter Employee Department : ");
fflush (stdin) ;
gets(info.department);
printf("Enter Basic Pay : ");
scanf("%f",&info.basic_pay);
printf("Enter Allowance : ");
scanf("%f",&info.allowance);
info.gross_pay = (info.basic_pay+info.allowance);
printf("\n");
printf("Employee's Gross Pay : PHP %10.2f",info.gross_pay);
printf("\n\n");
printf("Enter Philhealth : ");
scanf("%f",&info.philhealth);
printf("Enter SSS/GSIS : ");
scanf("%f",&info.sss_gsis);
printf("Enter Withholding Tax : ");
scanf("%f",&info.withholding_tax);
printf("Enter PAG-IBIG : ");
scanf("%f",&info.pag_ibig);
/* Solving for total deductions */
info.total_deductions = (info.philhealth+info.sss_gsis
+ info.withholding_tax+info.pag_ibig);
/* Solving for net pay of the employee */
info.net_pay = (info.gross_pay-info.total_deductions);
printf("\n");
printf("Employee's Total Deductions : PHP %6.2f",info.total_deductions);
printf("\n\n");
printf("Employee's Gross Pay : PHP %6.2f",info.net_pay);
printf("\n\n");
printf("Records has been updated in the database.");
printf("\n\n");
system("pause");
/* This code will save the update record in the binary file */
fseek ( fp, - recsize, SEEK_CUR ) ;
fwrite ( &info, recsize, 1, fp ) ;
break ;
}
}
if (strcmp(info.emp_id,emp_id) != 0 )
{
printf("\n\n");
printf("No Record in the Database.");
printf("\n");
system("pause");
break;
}
printf("\n");
printf ( "\nUpdate Another Record (Y/N) : " ) ;
fflush ( stdin ) ;
another = toupper(getche());
}
break ;
case '4' : /* This portion of the code will print employees payslip from the database */
rewind (fp);
another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
printf("\n");
printf("=== Print Employees PaySlip in the Database ===");
printf("\n\n");
printf("Enter Employee ID : ");
scanf("%s",&emp_id);
rewind (fp) ;
while ( fread( &info, recsize, 1, fp ) == 1 )
{
/* Retrieve and display the employees record if found
from the binary file */
if (strcmp(info.emp_id,emp_id) == 0 )
{
printf("\n");
printf("\n Employee ID : %s",info.emp_id);
printf("\n Employee Name : %s",info.emp_name);
printf("\n Position : %s",info.position);
printf("\n Department : %s",info.department);
printf("\n Basic Pay : PHP %6.2f",info.basic_pay);
printf("\n Allowance : PHP %6.2f",info.allowance);
info.gross_pay = (info.basic_pay+info.allowance);
printf("\n\n");
printf("\n Employee's Gross Pay : PHP %8.2f",info.gross_pay);
printf("\n");
printf("\n Philhealth : PHP %6.2f",info.philhealth);
printf("\n SSS/GSIS : PHP %6.2f",info.sss_gsis);
printf("\n Witholding Tax : PHP %6.2f",info.withholding_tax);
printf("\n PAG-IBIG : PHP %6.2f",info.pag_ibig);
/* Solving for total deductions */
info.total_deductions = (info.philhealth+info.sss_gsis
+ info.withholding_tax+info.pag_ibig);
/* Solving for net pay of the employee */
info.net_pay = (info.gross_pay-info.total_deductions);
printf("\n\n");
printf("Employee's Total Deductions : PHP %6.2f",info.total_deductions);
printf("\n\n");
printf("Employee's Gross Pay : PHP %6.2f",info.net_pay);
printf("\n\n");
system("pause");
break;
}
}
if (strcmp(info.emp_id,emp_id) != 0 )
{
printf("\n\n");
printf("No Record in the Database.");
printf("\n");
system("pause");
break;
}
printf("\n"); /* Search for another employee record */
printf ( "\n Search Another Student Record (Y/N) : " ) ;
fflush ( stdin ) ;
another = toupper(getche());
}
break ;
case '5' :
another = 'Y' ; /* This portion of the code will delete the employees record */
while ( another == 'Y' )
{
system("cls");
flag=0;
printf("=== Delete Employee Records in the Database ===");
printf("\n\n");
printf("Enter Employee ID : ");
scanf("%s",&emp_id);
printf("\n");
ft = fopen ( "TEMP.DAT", "wb" ) ;
rewind ( fp ) ;
while ( fread ( &info, recsize, 1, fp ) == 1 )
{
if ( strcmp ( info.emp_id, emp_id ) != 0 )
fwrite ( &info, recsize, 1, ft ) ;
else
flag=1;
}
/* Cresting a temporary file to remove the selected employees record */
fclose ( fp ) ;
fclose ( ft ) ;
remove ( "PAYROLL.DAT" ) ;
rename ( "TEMP.DAT", "PAYROLL.DAT" ) ;
fp = fopen ( "PAYROLL.DAT", "rb+" ) ;
/* If employees record found delete using this code */
if(flag==1) {
printf("\n\n");
printf("Record Successfully Deleted From the Database.");
printf("\n");
system("pause");
}
else if (flag!=1) {
printf("\n");
printf("Record Not Found in the Database.");
printf("\n");
system("pause"); /* stdlib.h library being used here excute DOS command*/
}
printf("\n");
printf( "Delete Another Record (Y/N) " ) ;
fflush ( stdin ) ;
another = toupper(getche());
}
break ;
case '6' :
fclose ( fp ) ;
printf("\n\n");
printf(" Thank You For Using This Program !!! ");
printf("\n\n");
system("PAUSE");
exit(0);
}
}
} /* Last line of code of the employees payroll program in C */
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