C++二进制文件读写，以及数据的拼合与还原

要把数据先合并到一个大的buffer里，然后把这个buffer写成二进制文件，然后重新读取这个二进制文件，然后把数据分配还原

代码如下：

#include <iostream>
#include <fstream>
#include <vector>
using namespace std;

int main()
{
	//Origin Objects
	vector<int> srcData_01 = { 0, 1, 2, 3, 4, 5 , 6, 7, 8, 9, 10, 11, 12, 13 };
	int srcData_01Size = sizeof(int) * srcData_01.size();

	vector<float> srcData_02 = { 1.1f, 2.1f, 1.5f, 2.3f};
	int srcData_02Size = sizeof(float) * srcData_02.size();

	//StoreBuffer
	vector<char> buffer;
	buffer.resize(srcData_01Size + srcData_02Size);

	//New Objects
	vector<int> destData_01;
	destData_01.resize(srcData_01.size());

	vector<float> destData_02;
	destData_02.resize(srcData_02.size());


	//Origin object to store buffer
	memcpy(buffer.data(), srcData_01.data(), srcData_01Size);
	memcpy(buffer.data() + srcData_01Size, srcData_02.data(), srcData_02Size);

	ofstream writeFile;
	writeFile.open("Files/TestBMP.data", std::ios::out | std::ios::binary);
	if (!writeFile)
	{
		cout << "Error opening file" << endl;
		return 0;
	}
	writeFile.write(buffer.data(), srcData_01Size + srcData_02Size);
	writeFile.close();

	//readBuffer
	vector<char> readbuffer;
	readbuffer.resize(srcData_01Size + srcData_02Size);

	ifstream readFile;
	readFile.open("Files/TestBMP.data", std::ios::in | std::ios::binary);
	if (!readFile)
	{
		cout << "Error opening file" << endl;
		return 0;
	}
	readFile.read(readbuffer.data(), srcData_01Size + srcData_02Size);
	readFile.close();

	//Store buffer to new object
	memcpy(destData_01.data(), readbuffer.data(), srcData_01Size);
	memcpy(destData_02.data(), readbuffer.data() + srcData_01Size, srcData_02Size);

	return 0;
}