Simple experiment of packing and unpacking a DWORD and a short inside a DWORD64 variable and making a string value.

pack.c

#include <stdio.h>
#include <windows.h>
/*
 * Author : @OsandaMalith
 * Website: https://osandamalith.com
 * Description: Simple experiment of packing and unpacking a DWORD and a short inside a DWORD64 variable and making a string value.
 */
int main() {

	DWORD a = 1633971809;  // a < 2 ^ 32
	short b =  29519;     // b < 2 ^ 16;
	DWORD64 pack = 0, temp = 0;
	
	printf("Value of a = %d\n",a);
	printf("Value of b = %d\n\n",b);
	
	puts("\t-=[Packing]=-\n");
	
	pack = a;
	pack <<= 0x10; // shift 2 bytes left
	pack |= b;
	
	printf("Packed data: 0x%I64X\n\n",pack);
	printf("As a string: %s\n\n",&pack);
	
	// clear the variables
	
	a ^= a;
	b ^= b;

	puts("\t-=[Unpacking]=-\n");
	
	temp = pack;
	pack &= 0xffff; // Extract the lowest 16 bits
	b = pack;
	temp >>= 0x10; // Extract the highest 32 bits
	a = temp;
	
	printf("Value of a = %d\n",a);
	printf("Value of b = %d\n\n",b);
	
	return 0;
}