Formatting floats/doubles with locale.h library

Hi, I have question about the best way to format a number. I did some research and I think it can be done using the locale.h library? I've trying it for quite some time and have gotten nowhere. I need to be able to take a float/double and format into a currency type. Ex: 54895.52 should be printed as $54,895.52

Any help would be greatly appreciated!! Thanks