Employee Record System In C
Introduction :-
This is an extremely basic scaled down project in C Employee Record System. In this venture, you can oversee representative records – add, list, adjust and erase records. Understanding this venture will assist you with figuring out how to add, view, change and eliminate information utilizing record taking care of.
Here, you can list the workers' record yet can't look through it like in other C tasks. Take a stab at altering this task, and compose your own code to execute the inquiry work. This task is finished and absolutely mistake free.
This venture is a control center application without illustrations accumulated in Code::Blocks utilizing GCC compiler.The source code for this undertaking is short, basic and straightforward.
Running Employee Record the executives framework on other compiler stages may expect changes to the code, and the current code will show blunders.
Features of Employee Record System:
The primary highlights of this venture incorporate fundamental record dealing with tasks; you will figure out how to add, list, adjust and erase information to/from document. The source code is generally short, so altogether go through the smaller than normal undertaking, and attempt to break down how things like capacities, pointers, documents, and clusters are carried out.
At present, recorded underneath are the solitary highlights that make up this undertaking, however you can add new highlights as you like to make this venture a superior one!
Add record
Rundown record
Alter record
Erase record
The capacities utilized in this undertaking are straightforward and they fundamentally control record taking care of and information structures. Along these lines, I will just depict the gotoxy work utilized in this venture. Attempt to see how this capacities fills in as you might need to utilize it or think that its utilized in numerous other C scaled down projects.
Code :-
#include <stdio.h> ///for input output functions like printf, scanf
#include <stdlib.h>
#include <conio.h>
#include <windows.h> ///for windows related functions (not important)
#include <string.h> ///string operations
/** List of Global Variable */
COORD coord = {0,0}; /// top-left corner of window
/**
function : gotoxy
@param input: x and y coordinates
@param output: moves the cursor in specified position of console
*/
void gotoxy(int x,int y)
{
coord.X = x;
coord.Y = y;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),coord);
}
/** Main function started */
int main()
{
FILE *fp, *ft; /// file pointers
char another, choice;
/** structure that represent a employee */
struct emp
{
char name[40]; ///name of employee
int age; /// age of employee
float bs; /// basic salary of employee
};
struct emp e; /// structure variable creation
char empname[40]; /// string to store name of the employee
long int recsize; /// size of each record of employee
/** open the file in binary read and write mode
* if the file EMP.DAT already exists then it open that file in read write mode
* if the file doesn't exit it simply create a new copy
*/
fp = fopen("EMP.DAT","rb+");
if(fp == NULL)
{
fp = fopen("EMP.DAT","wb+");
if(fp == NULL)
{
printf("Connot open file");
exit(1);
}
}
/// sizeo of each record i.e. size of structure variable e
recsize = sizeof(e);
/// infinite loop continues untile the break statement encounter
while(1)
{
system("cls"); ///clear the console window
gotoxy(30,10); /// move the cursor to postion 30, 10 from top-left corner
printf("1. Add Record"); /// option for add record
gotoxy(30,12);
printf("2. List Records"); /// option for showing existing record
gotoxy(30,14);
printf("3. Modify Records"); /// option for editing record
gotoxy(30,16);
printf("4. Delete Records"); /// option for deleting record
gotoxy(30,18);
printf("5. Exit"); /// exit from the program
gotoxy(30,20);
printf("Your Choice: "); /// enter the choice 1, 2, 3, 4, 5
fflush(stdin); /// flush the input buffer
choice = getche(); /// get the input from keyboard
switch(choice)
{
case '1': /// if user press 1
system("cls");
fseek(fp,0,SEEK_END); /// search the file and move cursor to end of the file
/// here 0 indicates moving 0 distance from the end of the file
another = 'y';
while(another == 'y') /// if user want to add another record
{
printf("\nEnter name: ");
scanf("%s",e.name);
printf("\nEnter age: ");
scanf("%d", &e.age);
printf("\nEnter basic salary: ");
scanf("%f", &e.bs);
fwrite(&e,recsize,1,fp); /// write the record in the file
printf("\nAdd another record(y/n) ");
fflush(stdin);
another = getche();
}
break;
case '2':
system("cls");
rewind(fp); ///this moves file cursor to start of the file
while(fread(&e,recsize,1,fp)==1) /// read the file and fetch the record one record per fetch
{
printf("\n%s %d %.2f",e.name,e.age,e.bs); /// print the name, age and basic salary
}
getch();
break;
case '3': /// if user press 3 then do editing existing record
system("cls");
another = 'y';
while(another == 'y')
{
printf("Enter the employee name to modify: ");
scanf("%s", empname);
rewind(fp);
while(fread(&e,recsize,1,fp)==1) /// fetch all record from file
{
if(strcmp(e.name,empname) == 0) ///if entered name matches with that in file
{
printf("\nEnter new name,age and bs: ");
scanf("%s%d%f",e.name,&e.age,&e.bs);
fseek(fp,-recsize,SEEK_CUR); /// move the cursor 1 step back from current position
fwrite(&e,recsize,1,fp); /// override the record
break;
}
}
printf("\nModify another record(y/n)");
fflush(stdin);
another = getche();
}
break;
case '4':
system("cls");
another = 'y';
while(another == 'y')
{
printf("\nEnter name of employee to delete: ");
scanf("%s",empname);
ft = fopen("Temp.dat","wb"); /// create a intermediate file for temporary storage
rewind(fp); /// move record to starting of file
while(fread(&e,recsize,1,fp) == 1) /// read all records from file
{
if(strcmp(e.name,empname) != 0) /// if the entered record match
{
fwrite(&e,recsize,1,ft); /// move all records except the one that is to be deleted to temp file
}
}
fclose(fp);
fclose(ft);
remove("EMP.DAT"); /// remove the orginal file
rename("Temp.dat","EMP.DAT"); /// rename the temp file to original file name
fp = fopen("EMP.DAT", "rb+");
printf("Delete another record(y/n)");
fflush(stdin);
another = getche();
}
break;
case '5':
fclose(fp); /// close the file
exit(0); /// exit from the program
}
}
return 0;
}
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c program to create employee record and update it,
c program for employee details using files
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