Question

How to read an entire binary file all at once in C++

Answer 1

#include <iostream>
#include <fstream>

int main() 
{
	std::streampos size;
	char *databock;

	std::ifstream file("d:\\data.bin", std::ios::in | std::ios::binary | std::ios::ate);

	if (file.is_open())
	{
		size = file.tellg();
		databock = new char[size];

		file.seekg(0, std::ios::beg);
		file.read(databock, size);

		file.close();

		std::cout << databock << std::endl;

		delete[] databock;
	}
	else std::cout << "Error open file" << std::endl;

	return 0;
}
/*
run:

data.bin
--------
A text for binary file

*/

 

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