I am stuck at one point in HW 1.4 ex 1. What does the 'characters from the keyboard can be stopped when the shutdown-code ^D (CTRL + D) is entered. ^D has the ASCII-value 4' mean? I mean how can I use it in my code? So far, I have worked on the code in a way that when the user hits enter, the program counts the no. of characters and words, but I am assuming since the program is also supposed to count number of new lines, then enter shouldn't be the end of user input right? Which gets me back to the ^D shutdown code, which I am not sure how to use. Can anyone guide me here? Thanks!!