Something

inp = "Welcome to CCC have a nice day".split(' ')
l = int(raw_input("Enter a width: "))
count = 0
stor = ''
star = []

for i in inp:
    count += 1
    if (len(stor) + len(i)) < l:
        stor += i + '.'
			
    elif (len(stor) + len(i)) == l:
	stor += i
			
    else: 
	while len(stor) < l:
	    stor += '.'
	star.append(stor)
	stor = ''
	if (len(stor) + len(i)) < l:
	    stor += i + '.'
			
	elif (len(stor) + len(i)) == l:
	    stor += i	
				
    if count == len(inp):
	while len(stor) < l:
	    stor += '.'
			
    if len(stor) == l:
	star.append(stor)
	stor = ''

for i in star:
    print i
pause = raw_input ("press any key to exit ")