Unsigned Short Int

[Deanm007]

How is this code giving the correct answer? I though unsigned short int is only positive numbers. I am giving it a -3 and I am getting 0 for sum.

thanks

#include <iostream>

using namespace std;

typedef unsigned short int Ushort;

int main()
{
	Ushort x = -3;
	Ushort y = 3;

	Ushort sum = x+y;
	cout << sum << endl;

	cin.get();
	return 0;
}

[hype261]

How is this code giving the correct answer? I though unsigned short int is only positive numbers. I am giving it a -3 and I am getting 0 for sum.

thanks

#include <iostream>

using namespace std;

typedef unsigned short int Ushort;

int main()
{
	Ushort x = -3;
	Ushort y = 3;

	Ushort sum = x+y;
	cout << sum << endl;

	cin.get();
	return 0;
}

The reason you are getting 0 for the sum is because when you set UShort x = -3 that is actually being set to the max value of a unsigned short int minus 3. Which on my system is 65533. Then you are adding 3 to it which is overflowing the unsigned short int which sets it back to 0.