CCS :: View topic - printf float doesn't work

CCS C Software and Maintenance Offers

FAQ

Official CCS Support

Profile Log in to check your private messages Log in

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support

printf float doesn't work

CCS Forum Index -> General CCS C Discussion

View previous topic :: View next topic

Author

Message

kalman

Joined: 19 Jan 2010
Posts: 4

printf float doesn't work

Posted: Mon Mar 08, 2010 9:13 pm

Reply with quote

Good day, I have got this printf problem when I try simulating with Proteus.
Using pcwhd 4.084

Code:

#include <16f877a.H>
#fuses HS, NOWDT, NOPROTECT, BROWNOUT,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)

#define INTS_PER_SECOND 60

long count;

#int_rtcc
void clock_isr() {
++count;
}

void main() {

long start,diff;
float dt;

set_timer0(0);
setup_counters( RTCC_INTERNAL, RTCC_DIV_256 | RTCC_8_BIT);
enable_interrupts(INT_RTCC);
enable_interrupts(GLOBAL);

do {

start=count;
getc();
diff=count-start;
dt=(diff)/60;
printf("%Ld %Ld %6.4f seconds.\n\r",count,start,dt);

} while (TRUE);

}

For example, start=0, count=133;
the value dt should be 2.2166, but it only shows 2.
Did I miss something there?

Jerson

Joined: 31 Jul 2009
Posts: 125
Location: Bombay, India

Posted: Tue Mar 09, 2010 7:23 am

Reply with quote

change this

Code:

dt=(diff)/60;

to this

Code:

dt=(float)diff/60;

and you'll get the result you want

kalman

Joined: 19 Jan 2010
Posts: 4


Posted: Tue Mar 09, 2010 8:25 am

wow, thanks

Display posts from previous:

	CCS Forum Index -> General CCS C Discussion	All times are GMT - 6 Hours
Page 1 of 1

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001, 2005 phpBB Group