Get resolution of double?

When converting a string to double the result prints out as 0.000000. Of course this is because the default resolution is to six digits. Using 10 digits of resolution gives 0.0000000247. What is the function or the best way to detect the length of this double and print it? (I wish the ".10f" could use a variable in place of 10)
example:
char data[]={"+2.47600E-08"};
double result;
result=atof(data);
DebugPrintf("%f\n",result);
DebugPrintf("%.10f\n",result);
Thanks, and sorry for the newbie question
Solved!
Go to Solution.

As per your question #2, you cannot do this with DebugPrintf, but using Fmt from the Formatting and I/O Library you can have a parametric number of decimal places in the string representation of a number: see Using Asterisks (*) Instead of Constants in Format Specifiers argument in this help topic.
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