1. IN SCHEME, Write a procedure (fullAdder x a b) to generate the pair output (c . s), where s is the output of the halfAdder procedure and c is the output of the carry-out procedure. The fullAdder is also called a one-bit adder.

(define fullAdder (lambda (x a b)

;;enter your code here

sum carryln carryOut Figure 3. The logic design of a one-bit full adder