Bit inversion problem

[nammae]

I have a problem with bit inversion operator( ~ )

#include <iostream>

using namespace std;

int main()
{
	int x, y;
	x = 12;
	y = ~x;
	
	cout << y;
	
	return 0;
}

As you see, value of x is equal to 12( 1100 ).
So I think the value of y is equal to 3( 0011 ).
But when I try to compile this program, the value of y is -13.
What is the problem?

[Bazzy]

An int is signed and contains more bytes so you won't get that result.
Even on an unsigned char the result would be difference as usually bytes have 8 bits
00001100
11110011 = 243

[nammae]

Ok, thank you very much.