1. Program to read and write binary data in a file.
#include <iostream.h>
#include <fstream.h>
#include<conio.h>
int main() {
ofstream fout("data.bin", ios::binary);
char num1[100];
cout << "Enter Content: "<<endl;
cin >> num1;
cout << "Writing Content in file 'data.bin'";
fout.write((char*)&num1, sizeof(num1));
fout.close();
ifstream fin("data.bin", ios::binary);
char n1[100], n2;
fin.read((char*)&n1, sizeof(n1));
fin.close();
cout << "Content of file 'data.bin' is: " << n1 << endl;
getch();
return 0;
}