Question

if i make a function that simply return a double value like this

double example () 
{
   double i =  999999999;
   return i;
}

the output will be:

example() => 9.99999999E8

i don’t know how to obtain it with ruby.. can someone help me?

Answer 1

To just turn it into a float, you can use to_f, for displaying in scientific notation a format string will help:

>> 999999999.to_f #=> 999999999.0
>> "%E" % 999999999 #=> "1.000000E+09"