C++ Integer division with remainder bitwise

DivisionWithRemainder

#include <iostream>
 
 using std::cout;
 using std::endl;
 using std::cin;
 
 
 
 int main()
 {
    int value = 0;
    int const divisor = 8;
    int remainder = 0;
 
 
    cout << "\nEnter an integr and I'll divide it by 8 and give you the remainder!"
        << endl;
    cin >> value;
 
    //remainder = (int)(value / divisor);
    //remainder = remainder & 7;
 
    remainder = value;
    while (remainder >= divisor)
    {
        remainder -= divisor;
    }
 
    cout << "\nThe remainder is " << remainder << " isn't that awesome?!"
        << endl;
 
    
    //Compute modulus division by 1 << s without a division operator
    unsigned int n = 0;          // numerator
    const unsigned int s = 0;
    const unsigned int d = 8U << s; // So d will be one of: 1, 2, 4, 8, 16, 32, ...
 
    cout << "Now Let's try it moving bits around"
        << endl;
    cin >> n;
        
    unsigned int m = 0; // m will be n % d
    m = n & (d - 1);
 
    cout << "The remainder is " << m << " isn't that awesome?!"
        << endl;
 
    //Most programmers learn this trick early, but it was included for the sake of completeness.
 
 
    return 0;
 }