Schemeで値の交換 (define a 10) (define b 5) (print "a is " a) (print "b is " b) (print "Exchange!!") (define c a) (define a b) (define b c) (print "a is " a) (print "b is " b) Gauche 0.9.9での実行結果は以下の通り。 a is 10b is 5Exchange!!a…