bitset

#include<iostream>
#include<bitset>
using namespace std;

int main()
{
        bitset<32> b1;
        for(int i=1;i<=32;i++){
                if(i==1||i==2||i==3||i==5||i==8||i==13||i==21){
                        b1[i]=1;
                }
        }
        cout << b1 << endl;
}
输出:00000000001000000010000100101110