Double output problem

[ccubed]

http://www.cplusplus.com/reference/i...precision.html

If you don't specify fixed-point, then setprecision specifies the maximum number of meaningful digits to display. If the value is 1875.11, and you say setprecision(2), then it's only going to display 1 and 8----and the best way to do that is to write 1.8e3.

Of you do specify fixed-point, then the meaning of setprecision() changes to be the number of digits after the decimal to display.

Somehow, that seems like something our professor should have distinguished. He just used it like it determined decimal places and didn't affect the number at all.