C++: Simple serialization

Simple serialization demo by converting struct to char (byte) array:

	//C++ simple serialization demo, converting struct to char (byte) array and back.
	//Şamil Korkmaz, January 2023
	#include <iostream>
	#include <string.h> //for memcpy
	typedef struct {
	int d;
	int i;
	} MY_DATA;
	void f(char* pData) {
	//print individual bytes (2 ints = 4+4 = 8 bytes):
	for (int i=0; i < sizeof(MY_DATA); i++) printf("%x ", pData[i]);
	printf("\n");
	//copy bytes to MY_DATA type:
	MY_DATA data2;
	memcpy(&data2, pData, sizeof(MY_DATA)); //copying to data2 causes contents of memory pointed to by pData to be interpreted as MY_DATA
	std::cout <<"data2.d = " << data2.d << std::endl;
	std::cout <<"data2.i = " << data2.i << std::endl;
	pData[1] = 1; //changing second byte from 0 to 1 adds 2^8 = 256 to d value
	}
	int main() {
	MY_DATA data; data.d = 5; data.i = 3;
	f((char*)&data); //interpret contents of memory pointed to by &data as char
	std::cout <<"data.d = " << data.d << std::endl;
	return 0;
	}

view raw serializationDemo.cpp hosted with ❤ by GitHub