C programming

to remove special characters and numerical values in String except alphabets. Consider any string with a length of 20. Example: if the user enters "P@ro-g!ra#mi^n*g", your program output should look EXACTLY like this: Enter a word: P@ro-g!ra#mmi^n*g output: Programming As another example: if the user enters "U!TA*STU&DE#N!T", your program output should look EXACTLY like this: Enter a word: U!TA*STU&DE#N!T output: UTASTUDENT