#include<conio.h>
#include<fstream.h>
#include<iostream.h>
#include<stdlib.h>
#include<string.h>
void create();
void sort();
void search();
int n;
class student
{
public:
char name[10],marks[10],attendence[10];
char rollno[10];
void getdata()
{
cout<<"enter student name:"<<endl;
gets(name);
cout<<"enter student rollno:"<<endl;
cin>>rollno;
cout<<"enter student marks:"<<endl;
cin>>marks;
cout<<"enter student attendence:"<<endl;
cin>>attendence;
}
void putdata()
{
cout<<name<<"\t"<<rollno<<"\t"<<marks<<"\t"<<attendence<<endl;
}
};
void main()
{
clrscr();
cout<<"enter how many records do u want:"<<endl;
cin>>n;
student x,y;
fstream f1;
f1.open("namesort.s",ios::out|ios::in);
for(int i=0;i<n;i++)
{
x.getdata();
f1.write((char *)&x,sizeof(x));
}
for(i=0;i<n;i++)
{
for(int j=i+1;j<n;j++)
{
f1.seekg(i*sizeof(x));
f1.read((char *)&x,sizeof(x));
f1.seekg(j*sizeof(y));
f1.read((char *)&y,sizeof(y));
if(strcmp(x.name,y.name)>0)
{
f1.seekp(i*sizeof(y));
f1.write((char *)&y,sizeof(y));
f1.seekp(j*sizeof(x));
f1.write((char *)&x,sizeof(x));
}
}
}
f1.close();
f1.open("namesort.s",ios::in);
while(f1.read((char *)&x,sizeof(x)))
{
x.putdata();
}
f1.close();
getch();
}
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