def replace_char(str):
	new_str=""
	for item in str:
		if(item.islower()): #item>='a' and item<='z'
			new_str+=item.upper()
		else:
			new_str+=item
	return new_str

	"""
	size=len(str)
	for i in range(size):
		if(str[i].islower()):
			...

	"""


def main():
	str=input("enter string ")
	print("after replacement ",replace_char(str))

	#str.upper() - that will do the same in one line using built-in  method
	

main()