This tells the compiler to reserve 5 spaces for a floating point value with 1 number past the decimal. So if you have a 10 digit number change the 5 to 10, and change the 1 to however many decimal places you want. Keep in mind the first number includes the decimal spaces, so a 10 would be for a number that is up to 10 digits including the numbers after the decimal, after that it just overflows the 10 spaces.