uc() function in Perl returns the string passed to it after converting it into uppercase. It is similar to ucfirst() function which returns only first character in uppercase.
Note: The characters which are already in UpperCase are not modified.
Syntax: uc String
Returns: string in uppercase.
Example 1:
Output:
Original String: geeksfOrGeeks
Modified String: GEEKSFORGEEKS
Example 2:
Output:
Original String: WelComEToGeeKS
Modified String: WELCOMETOGEEKS
