tenos tenos - 4 months ago 101
C++ Question

convert bitset to int in c++

In c++. I initialize a bitset to -3 like:

std::bitset<32> mybit(-3);


Is there a grace way that convert
mybit
to
-3
. Beacause bitset object only have methods like
to_ulong
and
to_string
.

Answer

Use to_ulong to convert it to unsigned long, then an ordinary cast to convert it to int.

int mybit_int;

mybit_int = (int)(mybit.to_ulong());

DEMO