everest% CC io2.C everest% everest% a.out Enter a filename: foo You entered: foo Enter another filename: abcdefghijklmnopqrstuvwxyz You entered: abcdefg First file name is: foo everest% everest% a.out Enter a filename: abcdefghijklmnopqrstuvwxyz You entered: abcdefg Enter another filename: bar You entered: bar First file name is: abcdefg everest%