Also, this is true, \t - Horizontal Tab, and \n - New Line (Line Carriage, i.e. the return or enter key). These are used in output and input. Output - If you want to add indentation and such you would use a horizontal tab, and if you wanted to put two sentences on different lines you could use \n between them to add a line break.
You can also use them in the function cin.getline which is included in the iostream.h header file. Syntax: cin.getline(variable, max_length, terminating_character). So, if you wanted a user to input a sentence, and you only wanted to store the text the user input untill they hit enter then this would suffice:
cin.getline(string1, 100, '\n');
cout<<"The text you entered was:\n";
Notice the use of \n inside of string and character marks. It cannot be used outside of these.