Rounding off values

CString cs;
float Dummy = 48;
Dummy = ((100*Dummy)/322);
cs.Format("Dummy = %f ",Dummy);
m_static1.SetWindowText(cs);

How do I round off the float Dummy to 2 decimal places and loose all evidence of the previous unrounded number.
rose3377Asked:
Who is Participating?
 
Answers2000Connect With a Mentor Commented:
1. TRUE ROUNDING
For sake of clarity on multiple lines (you can pack this into one equation).

Dummy = Dummy * 100 ;
Dummy = floor(Dummy + 0.5 ) ;
Dummy = Dummy / 100 ;

Do this before converting dummy to a string


or

2. ROUNDING FOR DISPLAY

change
cs.Format("Dummy = %f ",Dummy);
to
cs.Format("Dummy = %.2f ",Dummy);

0
 
JYoungmanCommented:
#include <math.h>
double round_two_places(double x)
{
    return ( floor(x*100.0 + 0.5) / 100.0 );
}
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.