Problems with rounding numbers

[AdINo]

I'm having problems with rounding numbers
pls help me out
this is the program instruction that i wrote

x = 420.30 * 0.15
y = 420.30 - x

i print the y out in .2lf format

and it came out as 357.26

it needed it to came out 357.25

i believe that there is a problem with x ( 63.045 ) which is needed to be 63.05
is there a way i could round x ( 63.045 ) before it is minus with 420.30.

Thank you in advance

[AdINo]

Problems with rounding numbers

I'm having problems with rounding numbers
pls help me out
this is the program instruction that i wrote

x = 420.30 * 0.15
y = 420.30 - x

i print the y out in .2lf format

and it came out as 357.26

it needed it to came out 357.25

i believe that there is a problem with x ( 63.045 ) which is needed to be 63.05
is there a way i could round x ( 63.045 ) before it is minus with 420.30.

Thank you in advance

[AdINo]

ooo ya , this is a C programming language

[AdINo]

ooo ya , this is a C programming language

[Banfa]

i believe that there is a problem with x ( 63.045 ) which is needed to be 63.05

420.30 * 0.15 is 63.045, presumably you have a reason for only wanting to store 2 decimal places?

You could round it something like

x = ((float)((long)(x*100+0.5)))/100.;

This will round to 2 decimal places but only if x*100 is in range for a long.