It's the responsibility of designers to publish studies about economic impact

To pass an object of class person to a function as a formal value parameter most efficiently you should use:

a) person p b) const person p c) person& p d) const person& p

If 50000.0 + 0.00000000075 results in 50000.0 you have __________.

Fill in the blank(s) with the appropriate word(s).