How to print numbers in binary system?

Question

C++ / C#

How to print numbers in binary system?
There is a vector with a large number of numbers of different lengths. It is necessary to display them in the binary system of calculus.
There was a variant with std::bitset, but a constant is used there. I saw boost::dynamic_bitset, but it's not stl

Answer 1

With the fmt lib, the output in binary is very simple:
fmt::print("{:b}", num);
If without lib, then you can write a function that prints a number in binary in 2 cycles. With the first cycle, find the position of the highest unit, with the second cycle, print the binary digits from the found highest down to zero.