Question

How to read (input) array of integers from binary file in C++

Answer 1

#include <iostream>
#include <fstream>

using std::cout;
using std::endl;
using std::ifstream;

#define SIZE 5

int main()
{
	int arr[SIZE] = { 0, 0, 0, 0, 0 };

	ifstream ifs("d:\\data.bin", std::ios::binary);

	ifs.read(reinterpret_cast<char*>(arr), SIZE * sizeof(int));

	for (int i = 0; i < SIZE; i++) 
		cout << arr[i] << endl;

	return 0;
}


/*
run:

45
8
12
98
875

*/

 

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