<< operator in C++?

Question

I am new to C++, what\'s the exact meaning for the << in statement below, Thanks.

if (Val & (0x0001 << 0))
{}
else
{}
         


        

Answer 1

It means shift 0x0001 number 0 bits to the left. In that specific case, it does nothing.

For example, if it was (0x0001 << 4), 0x0001 would become 0x0010. Each position shifted left is like multiplying the number by 2.