yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$ ll
total 56
lrwxrwxrwx    1 yoshi    yoshi          10 May  7 09:36 Item.c -> prog6.11.c
-rw-r--r--    1 yoshi    yoshi         312 Mar 16  2001 Item.h
-rw-r--r--    1 yoshi    yoshi         566 Mar 26  2001 Makefile
lrwxrwxrwx    1 yoshi    yoshi          11 May  7 09:36 ST.c -> prog12.5b.c
lrwxrwxrwx    1 yoshi    yoshi          10 May  7 09:36 ST.h -> prog12.1.h
-rw-r--r--    1 yoshi    yoshi          44 Apr 18  1999 entra.txt
-rw-r--r--    1 yoshi    yoshi         339 Apr 19  1999 entra2.txt
-rw-r--r--    1 yoshi    yoshi         263 Mar 13  2001 prog12.1.h
-rwxr-xr-x    1 yoshi    yoshi       18212 Mar 27  2001 prog12.2*
-rw-r--r--    1 yoshi    yoshi         715 Mar 13  2001 prog12.2.c
-rw-r--r--    1 yoshi    yoshi         827 Mar 13  2001 prog12.5.c
-rw-r--r--    1 yoshi    yoshi        1245 Mar 13  2001 prog12.5b.c
-rw-r--r--    1 yoshi    yoshi         412 May  7 09:37 prog6.11.c
yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$ make Item.o ST.o driver.o
gcc -g -Wall -pedantic -c Item.c
gcc -g -Wall -pedantic -c ST.c
gcc -g -Wall -pedantic -c driver.c
yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$ gcc Item.o ST.o driver.o
yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$ a.out < entra.txt 
Eu
Fala
crase
falei
frase
sem
uma

9 keys, 7 distinct keys
yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$ a.out < entra2.txt 
Aarão
Abelardo
Abissínia
Abner
Abraão
Absalão
Acab
Acaia
Aconcágua
Acre
Acrópole
Adolfo
Adriana
Adriano
Adriático
Afeganistão
Afonso
Afrodite
Agostinho
Aires
Ajax

44 keys, 21 distinct keys
yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$ make clean
/bin/rm -f *~ \#~ .\#* *.o *.log *.dvi *.toc core a.out
yoshi@erdos:~/Main/www/2002i/CompII/exx/ST_basico$