Write a C program that counts the number of repeated characters in a phrase entered by the user and prints them.

Write a C program that counts the number of repeated characters in a phrase entered by the user and prints them. If none of the characters are repeated, then print "No character is repeated"

For example: If the phrase is "full proof" then the output will be Number of characters repeated: 3 Characters repeated: f, l, o

(Input from the user).