Bitset in C++, about continuously add

Question

I want to add 1 value to the bitset until it over flows, I am wondering how to do this, like:

bitset<20> foo; (foo=00000 00000 00000 00000) how can we implement thi

Answer 1

The following code should help you:

bitset<20> b;

bool overflow = false;
while( ! overflow ){
    cout << b << endl; // prints bits in reversed order
    int ipos = b.size();
    overflow = true;
    while( overflow && --ipos >= 0 ){ 
        overflow = b[ipos];
        b[ipos] = ! b[ipos];
    }
}

tested by @Jarod42, thanks.