Question

How to write (output) array of integers to binary file in C++

Answer 1

#include <iostream>
#include <fstream>

using std::cout;
using std::endl;
using std::ofstream;

#define SIZE 5

int main()
{
	int arr[SIZE] = { 45, 8, 12, 98, 875 };

	ofstream ofs("d:\\data.bin", std::ios::binary);

	ofs.write(reinterpret_cast<char*>(arr), SIZE * sizeof(int));

	ofs.close();

	return 0;
}


/*
run:

data.bin
--------

-         b   k

*/

 

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