double value precision

See more:

MFC

Hello All, I am using visual studio 2008 and maniplulating double addition.

double a = 1.5000010 ;
double b = 0.0000090;
double c = a+b;

The output I am expecting here is 1.5000100 but the actual output comes as 1.5000099999999998.

I dont have to consider more than 7 fractional points so the output comes like 1.5000099.

How do i convert or store this in to the format which i like? that means 1.5000100.

Is there any built-in method or win32 API available to do this?

Thanks in advance.