Exhibit 11 VANGUARD CELLULAR SYSTEMS, INC. AND SUBSIDIARIES CALCULATION OF DILUTED EARNINGS PER SHARE FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995 (Amounts in thousands, except per share data) - ------------------------------------------------------------------------------------------------ 1997 1996 1995 - ------------------------------------------------------------------------------------------------ Net Income (Loss) $(10,027) $ 6,449 $ (7,013) ================================================================================================ Weighted average number of common shares outstanding 40,224 41,320 41,100 Adjustments necessary to reflect weighted average number of common stock shares outstanding on a diluted basis 802 518 1,059 - ------------------------------------------------------------------------------------------------ 41,026 41,838 42,159 ================================================================================================ Diluted net income (loss) per common share $ (0.24) $ 0.15 $ (0.17) ================================================================================================