Write a program to check if an input is a valid hashtag(starts with #, contains only letters, numbers, and underscore, no space or special characters).1)Name your program hashtag. c.2)The user input ends with the user pressing the enter key (a new line character).3)Library function isalpha(), isdigit(), and isalnum()arenot allowed inthis program.4)Use getchar() to read in the input.

When jen is planning to upgrade to a monitor with a better resolution, what should she be looking for in the new monitor?

You install teamviewer on your workstation at home so that you can ac ess it when on the road. how can you be assured that unknown users cant access your computer through team viewer?

Simon says is a memory game where "simon" outputs a sequence of 10 characters (r, g, b, y) and the user must repeat the sequence. create a for loop that compares the two strings starting from index 0. for each match, add one point to userscore. upon a mismatch, exit the loop using a break statement. assume simonpattern and userpattern are always the same length. ex: the following patterns yield a userscore of 4: simonpattern: rrgbryybgy userpattern: rrgbbrybgy