how to get 2 digits from float

Guest · Posted: Fri Nov 09, 2007 6:41 pm

Hello, can any1 tell me please how to get 2 digits and one decimal digit from a float value?
Ex: float i=128.4;
I need to get 28.4

thank you all

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Is the purpose to extract these digits so they can be displayed ?

You could use the sprintf() function. This will convert the floating point
value into an ASCII string and put it in a buffer. You can then scan the
buffer and find the location of the decimal point. Then you will know
where the other digits are located in the buffer, and you can display them.

Guest · Posted: Sat Nov 10, 2007 4:21 am

Guest · Posted: Wed Nov 21, 2007 9:21 am

http://www.edaboard.com/viewtopic.php?t=150005
http://www.coolcircuit.com/project/meter/index.html

Bye