Question

Lab 6    -   Program #2   -   Write one number to a text file. Use the write() and read() functions with binary

                                                       data, where the data is not char type.              (Typecasting is required)

Fill in the blanks, then enter the code and run the program.

Note:   The data is int type, so typecasting is

           required in the write() and read() functions.

#include <iostream>

#include <fstream>

using namespace std;

int main()

{

   const int SIZE = 10;

   int numbers[SIZE] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

   fstream file;

	(1.)    Write one statement to open         the file for output in binary mode. The file name is:   numbers.dat

                                                  

  

   cout << "Writing the data to the file.\n";

	(2.)    Write one statement to write the            contents of the array to the file.

                                              

   file.close();

	(3.)    Write one statement to open         the file for input in binary mode. The file name is:   numbers.dat

                                               

   // Read the contents of the file into the array.

   cout << "Now reading the data back into memory.\n";

	(4.)    Write one statement to read the         contents of the file into the array.

                                               

   // Display the contents of the array.

   for (int count = 0; count < SIZE; count++)

      cout << numbers[count] << " ";

   cout << endl;

/* OUTPUT

Writing the data to the file.

Now reading the data back into memory.

1 2 3 4 5 6 7 8 9 10

   file.close();

   return 0;

}

Please fill in the blanks

Answer 1

Hey buddy,

Here you can find your answer!!!!!

#include <iostream>

#include <fstream>

using namespace std;

int main()

{
const int SIZE = 10;

int numbers[SIZE] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

fstream file;

ofstream wf("numbers.dat", ios::out | ios::binary);

cout << "Writing the data to the file.\n";

for(int i = 0; i < 10; i++)
{
wf.write((char *) &numbers[SIZE], sizeof(numbers));
}
wf.close();

cout << "Now reading the data back into memory.\n";

ifstream rf("numbers.dat", ios::out | ios::binary);

for(int i = 0; i < 3; i++)
{
rf.read((char *) &numbers[i], sizeof(numbers));
}
rf.close();

for(int i=0; i < 10; i++)
{
cout << numbers[i] << endl;
}
return 0;
}