Help with string

Im having trouble with string and having a hard time starting this.

I need to write a program that reads in a line of text and replaces all four-letter words with the word “love”. For example, the input string
I hate you!
should produce the output
I love you!

Of course, the output will not always make sense. For example, the input string

Run home.
should produce the output
Run love.

If the four-letter word starts with a capital letter, it should be replaced by "Love", not by "love". You need not check capitalization, except for the first letter of a word.
A word is any string consisting of the letters of the alphabet and delimited at each end by a blank, the end of the line, or any other character that is not a letter.
Your program should repeat this action until the user says to quit.


thanks for your help
write a program that reads in a line of text

I think at least you could try writing the first part of your assignment, couldn't you?
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