Converting Binary to Decimal built-in function

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In C++, I need to do a binary to decimal conversion.

I know how to do it by hand, but I was wondering if there was a function that could do it for me.

For example, if I have a decimal number and want to print it in another base, I just call setbase (base).

std::cout<<std::setbase(16)<<20; // prints 20 in base 16.                Is it possible to do something similar but convert from binary to decimal?
Jul 15 in C++ by Nicholas
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