Hey guys I'm a beginner with C++ and am doing a practice problem for my class and am having trouble figuring this problem out.

A man wants 1 grain for the 1st square on a chessboard. 2 grains on the 2nd. 4 grains on the 3rd. 8 grains for the 4th square. etc etc (doubling for each square)

I have to write a program that will tell me how many squares it would take to reach at least 1,000 grains of rice, 1,000,000 grains...