C++中的bitset

http://www.cppblog.com/mydriverc/articles/33991.html

 

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int main() {     string str = "0101";       bitset<32> b1(str);     bitset<32> b2(5);       cout << b2[3] << endl;     cout << b2[2] << endl;     cout << b2[1] << endl;     cout << b2[0] << endl;     return 0; }