水题天天有，今天特别多....嘿嘿
u Calculate e Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 19289 Accepted Submission(s): 8423 Problem Description A simple mathematical formula for e is where n is allowed to go to infinity. This can actually yield very accurate approximations of e using relatively small values of n. Output Output the approximations of e generated by the above formula for the values of n from 0 to 9. The beginning of your output should appear similar to that shown below. Sample Output n e - ----------- 0 1 1 2 2 2.5 3 2.666666667 4 2.708333333
原文：http://www.cnblogs.com/luozhijun/p/6880464.html