Bitshifting in C++

#include <iostream>
#include <string>

using namespace::std;

void main() {
    unsigned int a = 4, b = 8;

    cout << "and: " << (a & b) << endl;
    cout << "or: " << (a | b) << endl;
    cout << "xor: " << (a ^ b) << endl;
    cout << "inversion: " << ~a << endl;

    int c = 58, d = 15;

    cout << "c " << (c & 32) << endl;
    cout << "d " << (d & 32) << endl;

    unsigned char e = 221;
    cout << "e " << ~e << endl;

    cout << "f ";
    int f = 5;
    for(int i = 0; i < 5; i++)
    {
        f = f << 1;
        cout << f << "\t";
    }
    cout << endl;

    cout << "g ";
    int g = 341;
    for(int i = 0; i < 5; i++)
    {
        g = g >> 1;
        cout << g << "\t";
    }
    cout << g << endl;

    system("pause");
}