The code that examines all the strings in the input source and determines how long the longest string (or strings are) is the following:
total = 0;
% initial value is zero, in every while loop it will be incremented
while(input.hasNextInt()){
total += input.nextInt( );
}
The answer is C ms-dos
Side note:
GUI means graphical user interface. In other words, that means it looks pretty and has cool buttons, animations and cute stuff. MS-DOS is just a black screen with words on it. Definitely not cute or cool.
