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#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
class employee
{
private:
int empno,age;
char sex,name[25],desig[10],addr[30],city[15];
float msal,ysal;
public:
void indata();
void outdata();
void modify();
int retempno();
};
void employee::indata()
{
cout<<"enter employee number:";
cin>>empno;
cout<<"enter employee name:";
gets(name);
cout<<"enter age:";
cin>>age;
cout<<"enter sex:";
cin>>sex;
cout<<"enter city:";
gets(city);
cout<<"enter address:";
gets(addr);
cout<<"enter designation:";
gets(desig);
cout<<"enter monthly salary:";
cin>>msal;
}
void employee::outdata()
{
cout<<"\nemployee number:"<<empno;
cout<<"\nemployee name:"<<name;
cout<<"\neage:"<<age;
cout<<"\nsex:"<<sex;
cout<<"\ncity:"<<city;
cout<<"\naddress:"<<addr;
cout<<"\ndesignation:"<<desig;
cout<<"\nmonthly salary:"<<msal;
ysal=msal*12.0;
cout<<"\nannual income:"<<ysal;
}
int employee::retempno()
{
return empno;
}
void employee::modify()
{
cout<<"\nemployee number:"<<empno;
cout<<"\nemployee name:"<<name;
cout<<"\neage:"<<age;
cout<<"\nsex:"<<sex;
cout<<"\ncity:"<<city;
cout<<"\naddress:"<<addr;
cout<<"\ndesignation:"<<desig;
cout<<"\nmonthly salary:"<<msal;
int mempno,mage;
char msex,mname[25],mdesig[10],maddr[30],mcity[15];
float mmsal,mysal;
cout<<"enter new employee number(enter '-1' to retain old one):";
cin>>mempno;
cout<<"enter new employee name:(enter . to retain old one):";
gets(mname);
cout<<"enter new age(enter '-1' to retain old one):";
cin>>mage;
cout<<"enter new sex(enter '.' to retain old one):";
cin>>msex;
cout<<"enter new city(enter '.' to retain old one):";
gets(mcity);
cout<<"enter new address(enter '.' to retain old one):";
gets(maddr);
cout<<"enter new designation(enter '.' to retain old one):";
gets(mdesig);
cout<<"enter new monthly salary(enter '-1.0' to retain old one):";
cin>>mmsal;
if(strcmp(mname,".")!=0)
strcpy(name,mname);
if(strcmp(mdesig,".")!=0)
strcpy(desig,mdesig);
if(strcmp(mcity,".")!=0)
strcpy(city,mcity);
if(strcmp(maddr,".")!=0)
strcpy(addr,maddr);
if(msex!='.')
sex=msex;
if(mempno!=-1)
empno=mempno;
if(mmsal!=-1)
mmsal=msal;
ysal=(12.00*msal);
}
void search()
{
employee se;
fstream sf;
sf.open("employee.dat",ios::in|ios::app);
int flags=0,emprno,i=0;
cout<<"enter employee number :";
cin>>emprno;
while(!sf.eof())
{
sf.read((char*)&se,sizeof(se)); i++;
if(se.retempno()==emprno)
{
cout<<"Search successfull";
se.outdata();
flags=1;
}
}
if(flags==0)
cout<<"specified data not found";
sf.close();
}
void add()
{
fstream fa; employee ea;
fa.open("employee.dat",ios::in|ios::app);
char ch;
do{
ea.indata();
fa.write((char*)&ea,sizeof(ea));
cout<<"do you want to add more records(y/n):";
cin>>ch;
}while(ch=='y'||ch=='Y'); fa.close();
}
void delete()
{
ifstream fd;
ofstream ft;
fd.open("employee.dat");
ft.open("temp.dat");
int flagd=0;
char conf='y';
employee ed;
cout<<"enter employee number to delete:";
int enodel; cin>>enodel;
while(!fd.eof())
{
fd.read((char*)&ed,sizeof(ed));
if(ed.retempno()==enodel)
{
flagd=1;
cout<<"record preparing for delete";
ed.outdata();
cout<<"do you want do delete this record(y/n):";
cin>>conf;
if(conf=='n')
f2.write((char*)&ed,sizeof(ed));
}
f2.write((char*)&ed,sizeof(ed));
}
if(flagd==0)
cout<<"specified employee not found ";
remove("employee.dat");
rename("temp.dat","employee.dat");
cout<<"process complete";
fd.close(); ft.close();
}
void main()
{
clrscr();
employee e; int ch;flag=0;
cout<<"\n1.add a record\n2.delete a record\n3.search for a record\n4.modify a record\n5.exit\nenter choice:";
cin>>ch;
if(ch==1)
add();
else if(ch==2)
delete();
else if(ch==3)
search();
else if(ch==4)
{
cout<<"enter employee no to modify:";
int empnom; cin>>empnom;
ifstream f;
f.open("employee.dat";
while(!f.eof()){
f.read((char*)&e,sizeof(e));
if(e.retempno()==empnom)
{
flag==1;
cout<<"record found";
e.modify();
}
if(flag==0)
cout<<"record not found":
}
else if(ch==5)
exit(0);
else
cout<<"wrong choice";
f.close();
getch();
}
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