printf("%lf ", variable);
this will by default print with 6 digits after the decimal point.
I noticed the result is rounded by Pelles C (version 4.5).
Other compilers just truncate the result.
Could anyone please clarify this??
Bastiaan
Please show us example code or least what variable value was.
Read this:
http://www.opengroup.org/onlinepubs/009695399/functions/printf.html (http://www.opengroup.org/onlinepubs/009695399/functions/printf.html)
If the precision is missing, it shall be taken as 6;
L
Specifies that a following a, A, e, E, f, F, g, or G conversion specifier applies to a long double argument.
Here is more about C standard:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf (http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf)
#include <stdio.h>
#include <stdlib.h>
int main()
{
printf("The true variance is %lf\n", 0.0000016 );
return 0;
}
Quote from: timovjlL Specifies that a following a, A, e, E, f, F, g, or G conversion specifier applies to a long double argument.
He is using a lowercase l, which is correct for a double, but optional for printf.
l (ell) Specifes that a following a, A, e, E, f, F, g, or G conversion specifier applies to an argument with type pointer to double. I realize this is an old post but I couldn't let it go.