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#include <iostream>
using namespace std;
 
struct myobject {
	int x;
	std::string y;
	double z;
};
 
int main() {
	// your code goes here
	myobject obj1 = {
		42, "hello", 42.42
	};
	unsigned char* bytes1 = new unsigned char[sizeof(obj1)];
	memcpy(bytes1, obj1, sizeof(obj1));
	myobject obj2 = {
		42, "hello", 42.42
	}
	unsigned char* bytes2 = new unsigned char[sizeof(obj2)];
	memcpy(bytes2, obj2, sizeof(obj2));
 
	std::cout << memcmp(bytes1, bytes2, sizeof(bytes1)) << '\n';
 
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:16:35: error: ‘memcpy’ was not declared in this scope
  memcpy(bytes1, obj1, sizeof(obj1));
                                   ^
prog.cpp:20:2: error: expected ‘,’ or ‘;’ before ‘unsigned’
  unsigned char* bytes2 = new unsigned char[sizeof(obj2)];
  ^~~~~~~~
prog.cpp:21:9: error: ‘bytes2’ was not declared in this scope
  memcpy(bytes2, obj2, sizeof(obj2));
         ^~~~~~
prog.cpp:23:52: error: ‘memcmp’ was not declared in this scope
  std::cout << memcmp(bytes1, bytes2, sizeof(bytes1)) << '\n';
                                                    ^

Standard output is empty