One easy way is with the type system. When you cast a floating point value it cuts off the precision. If you subtract that result from the original, you get the precision:

c Syntax (Toggle Plain Text)

double d = 23.4;
double w = (int)d; /* w == 23.0 */
double p = d - w; /* p == 0.4 */

double d = 23.4; double w = (int)d; /* w == 23.0 */ double p = d - w; /* p == 0.4 */

you dont know what what means? casting? start from the beginning of Tom Gunns code snippet:

'd' is a double (floating point) variable containing 23.4.

'w' is a double variable set to the value of 'd' once 'd' is casted as an integer. (see where 'd' is casted as an integer by the use of 'int' type in parentheses.) now 'w' contains the whole value 23.0 with no fractional part.

'p' is another double variable that is the value of the difference between 'd' and 'w'... since 'd' is 23.4 and 'w' is 23.0, the difference is 0.4, and this fractional part is assigned to 'p'

now 'd' still contains the original decimal value (23.4), and 'w' contains the whole number (23) and 'p' contains the fractional part (0.4)


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i need help
I need to display
Example
23.4
and display 23 and .4

how do i do this?