#include <iostream>
using namespace std;

int main()
{
    int      k   = -2;
    unsigned uns =  1;

    int      x = k + uns;
    unsigned y = k + uns;

    cout << "x   = " << x      << endl;
    cout << "y   = " << y      << endl;
    cout << "y+1 = " << y + 1  << endl;


    signed   char c = 255;
    unsigned char d = 255;

    cout << "c+1 = " << c + 1  << endl;
    cout << "d+1 = " << d + 1  << endl;
    d = d + 1;
    cout << "d   = " << (int)d << endl;
}