For your next project do you need a digital circuit with
three inputs A, B, C and one output F.
F = f(A,B,C)

If the input C=1 must the output F = A&B, else if C=0 then must F=A#B

  Please note the notation:  & = AND,  # = OR,   $ = XOR,  ! = NOT
Alternative notations used:  * = AND,  + = OR, :+: = XOR  / = NOT