Write a C++ function that receives a single letter and prints out the corresponding digit on the telephone. The letters and digits on a telephone are grouped this way: 2 = ABC 3 = DEF 4 = GHI 5 = JKL 6 = MNO 7 = PRS 8 = TUV 9 = WXY No digit correspo
This paper, based on the tiny error rule (TER) in algebraic sum method, derived the criterion for correctly expressing errors with significant digit, for the first time. Then, according to the criterion, an important conclusion is further reached, n
