Employee management using File in C

Question

Write a program for Employee management using File handling in C. Get the records from the user and store that in file.

Note

fseek() – used to move pointer to specific position

fwrite() – used to write in file

fread() – used to read from the file

For further details refer this

Logic

• The logic is simple for employee management. Create a structure for the employee with details such as name, job, salary, id.
• Get the employee details from the user.
• Open the file in w+(both reading and writing) mode and write the structure into the file using fwrite.
• To read the details, move the cursor to the beginning of the file and read each employee details using fread.
• Then print the employee details. You can also use fscanf, fprintf as alternative of fread, fwrite.

Program

[code lang=”c”]
#include<stdio.h>
#include<stdlib.h>
int main()
{
struct Emp
{
int id;
char employeename[20];
long int salary;
char job[20];
}e;
int x;

FILE* fptr;
fptr = fopen("New.dat","w+"); //opening for both reading and writing
if(fptr==NULL)
printf("can’t open file");

char c;

do
{
printf("1.Insert new employee detail");
printf("\n\n2.Display all detail…");
scanf("%d",&x);
getchar();

switch(x)
{
case 1:
fseek(fptr,0,SEEK_END); //move cursor to end of file

printf("\nEnter employee name: ");
gets(e.employeename);
printf("\nEnter employee id:");
scanf("%d",&e.id);
getchar();
printf("\nEnter salary: ");
scanf("%d",&e.salary);
getchar();
printf("\nEnter job: ");
gets(e.job);
fwrite(&e, sizeof(struct Emp),1, fptr);
break;
case 2:

fseek(fptr,0,SEEK_SET); //move cursor to the beginning of the file

while(fread(&e,sizeof(struct Emp),1,fptr))
{

printf("%d %s %d %s\n",e.id,e.employeename,e.salary,e.job);
}
break;

default: printf("wrong choice");

}

printf("Do you want to continue (y/n)…");

scanf("%c",&c);
}while(c==’y’);
fclose(fptr); //close the file
}
[/code]

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