You can, but it should be a string.
std::bitset<8> bits("1111");
std::cout << bits.to_ulong() << std::endl;
You can convert your integer to string and then pass it to bitset
c-tor.
题
So I know there is a way to convert Dec to binary using the bitset library but can you do the same for binary to decimal using the bitset library? or do you have to do it manually?
bitset<8> bin_x(number);
解决方案
You can, but it should be a string.
std::bitset<8> bits("1111");
std::cout << bits.to_ulong() << std::endl;
You can convert your integer to string and then pass it to bitset
c-tor.
其他提示
Another easy way (without using bitset library) using stoi
// #include <string>
std::string str = "-10010110001";
int dec = std::stoi(bin, nullptr, 2); // dec = -1201