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#include<iostream>
#include<fstream>
#include<cstdio>
using namespace std;
class student
{
int rno;
char name[80];
public:
void getdetails()
{
cout<<"\nEnter Roll Number:-";
cin>>rno;
cout<<"\nEnter name:-";
cin>>name;
}
void putdetails()
{
cout<<"Roll Number:"<<rno<<"\nName:"<<name<<endl<<endl;
}
int returnrno(){return rno;}
};
void addrecord()
{
ofstream ofile;
ofile.open("c:\\student.txt",ios::app|ios::binary);
student s1;
s1.getdetails();
ofile.write((char *)&s1,sizeof(s1));
}
void searchrecord()
{
int query;
cout<<"\nEnter the record to be searched for:-";
cin>>query;
student s1;
ifstream ifile;
ifile.open("c:\\student.txt",ios::binary);
while(ifile.read((char *)&s1,sizeof(s1)))
{
if(query==s1.returnrno())
{
cout<<"\nRecord found!\n";
s1.putdetails();
return;
}
}
cout<<"\nRecord Not Found!\n\n";
}
void modifyrecord()
{
ifstream ifile;
ifile.open("c:\\student.txt",ios::binary);
ofstream ofile;
ofile.open("c:\\temp.txt",ios::binary);
int query;
cout<<"\nEnter the record to be modified:-";
cin>>query;
student s1;
ifile.seekg(0);
while(ifile.read((char *)&s1,sizeof(s1)))
{
if(query==s1.returnrno())
{
s1.getdetails();
ofile.write((char *)&s1,sizeof(s1));
}
else
{
ofile.write((char *)&s1,sizeof(s1));
}
}
remove("c:\\student.txt");
rename("c:\\temp.txt","c:\\student.txt");
}
void deleterecord()
{}
void printrecord()
{
ifstream ifile;
ifile.open("c:\\student.txt",ios::binary);
student s1;
while(ifile.read((char *)&s1,sizeof(s1)))
{
cout<<endl;
s1.putdetails();
}
cout<<endl<<endl<<endl;
}
int main()
{
int ch;
do
{
cout<<"\nMenu\n1.)Add Record\n2.)Search Record\n3.)Modify Record\n4.)Delete Record\n5.)Print Record\n6.)Exit\nEnter choice:-";
cin>>ch;
cout<<endl<<endl;
switch(ch)
{
case 1:
addrecord();
break;
case 2:
searchrecord();
break;
case 3:
modifyrecord();
break;
case 4:
deleterecord();
break;
case 5:
printrecord();
break;
case 6:
break;
default:
cout<<"\nInvalid choice!";
}
}while(ch!=6);
}
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