For floating point number formatting you can use %f, and you have to specify the minimum field width and the precision in terms of characters. If you use %4.2f, means four characters wide minimum (if less than 4 are used, will be filled with blank spaces at left) and 2 characters for precision. If you want 10 characters of minimum wide and 0 of decimal precision, you use %10.0f .
You aren't interacting with Xcode and Objective-c as much as you suspect here, the underlying implementation is printf. Check out this tutorial on how to use printf format specifiers.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.