'''
Exercise 1: Write a program to read through a file and print the contents
of the file (line by line) all in upper case. Executing the program will look
as follows:

python shout.py
Enter a file name: mbox-short.txt
FROM STEPHEN.MARQUARD@UCT.AC.ZA SAT JAN  5 09:14:16 2008
RETURN-PATH: <POSTMASTER@COLLAB.SAKAIPROJECT.ORG>
RECEIVED: FROM MURDER (MAIL.UMICH.EDU [141.211.14.90])
     BY FRANKENSTEIN.MAIL.UMICH.EDU (CYRUS V2.3.8) WITH LMTPA;
     SAT, 05 JAN 2008 09:14:16 -0500
     
You can download the file from
www.py4e.com/code3/mbox-short.txt
'''

arquivo = input('Enter a file name: ')
texto=open(arquivo)
for linha in texto:
    linha=linha.rstrip()
    print(linha.upper())
