ex3: ex3.o 
	gcc -o ex3  ex3.o  

ex3.o: ex3.c 
	gcc  -c   ex3.c

ex4: ex4.o 
	gcc -o ex4  ex4.o  

ex4.o: ex4.c 
	gcc  -c   ex4.c

testeA: ex3 ex4
	ex3 >a
	ex4 <a

testeB: ex3 ex4
	ex3 | ex4 

clean: 
	rm -f ex3.o ex4.o