//A Simple Decimal-to-Binary program.
#include <iostream>
#include <bitset>
using namespace std;
int main()
{
    int decimal_number;
    const int number_of_bits=8; //e.g: 8 bits, also should be const.
    string binary_number;
    cout<<"Dec: ";
    cin>>decimal_number;
    binary_number=bitset<number_of_bits>(decimal_number).to_string();
    cout<<"Bin: "<<binary_number;
}