Code trouble

eldondehart · January 15, 2018, 12:00pm

I have a formula for figuring out relitive humidity but it will not compile the trouble is the double **

es= 6.11 * 10.0**(7.5*tc/(237.7+tc))

how do I enter in gcc format...??
thanks
Eldon

MadeInGermany · January 15, 2018, 12:31pm

Assuming you mean C, and
according to this article it should be

#include <math.h>

es= 6.11 * pow( 10.0, (7.5*tc/(237.7+tc)) );

Also consult the man page

man pow

eldondehart · January 15, 2018, 12:53pm

/home/eldon/wthrbase/src/wthrbase.c:929:15: error: too few arguments to function �pow'
this is the error

Corona688 · January 15, 2018, 12:55pm

You probably didn't put enough options into pow. Please show the exact code you used.

eldondehart · January 15, 2018, 1:04pm

es = 6.11 * pow(10.0 * (7.5 * c/ (237.7 + c)));

thanks

Don_Cragun · January 15, 2018, 1:07pm

Change:

es = 6.11 * pow(10.0 *  (7.5 * c/ (237.7 + c)));

to:

es = 6.11 * pow(10.0, (7.5 * c/ (237.7 + c)));

or:

es = 6.11 * pow(10.0, 7.5 * c/ (237.7 + c));

eldondehart · January 15, 2018, 1:18pm

that did it!!!!! thanks lots all of you.
Eldon