write a C++ program that reads three numbers from the file infile.dat (you create it yourselves), sums the numbers, and writes the sum to the file outfile.dat.

Develop a Favorite Twitter Searches app. This app allows users to save their favorite (possibly lengthy) Twitter search strings with easy-to-remember, user-chosen, short tag names. Users carn then conveniently follow the tweets on their favorite topics. Twitter search queries can be finely tuned using Twitter's search operators (http://www.followthehashtag.com/help/hidden-twitter- search-operators-extra-power-followthehashtag). The user's favorite searches are saved on the device, so they're immediately available each time the app launches. Here are the important characteristics: Mssing Test User can save many searches and scroll through them in alphabetical order Search queries and their corresponding tags are entered in the EditTexts at the top of the screen - an Alert dialog shows if no inputs in the EditTexts. The Save Button adds each search to the favorites list Touching a Search Button sends that search to Twitter and displays the search results in the device's web browser .User can edit the searches using the Edit Button to the right of each search button Touch the Clear Tags Button at the bottom of the screen removes all the searches from the favorite listan Alert dialog asks the user to confirm this deletion first The screenshots are shown as follows: Bonus Features: (50 points) Provide a Delete button for each search so the user can discard individual searches. Alert Dialog should be popped up to confirm the deletion Allow the user to add filters to searches (e.g., include search results only with videos, images or links). You may need to investigate the Twitter search operators in more detail