I really need help on this one. Can't believe getting this kind of question as a newbie to C programming. Thanks alot Write a program that takes 3 command-line arguments â€“ the first is a flag, then second is a character, the third is a filename. If the flag argument is â€˜sâ€™ then it prints only those lines in the file that contain the character. If the flag argument is â€˜-nâ€™ then it prints only those lines in the file that do *not* contain the character.