Write a program that requires the user to input a paragraph of text, and then follow the first letter of each word on the statistics of this text and sort out the number of words. (Sjtu two special operation 2)

4\4.cpp
.\4.dsp
.\4.dsw
.\4.ncb
.\4.opt
.\4.plg
.\Debug\4.exe
.\.....\4.ilk
.\.....\4.obj
.\.....\4.pch
.\.....\4.pdb
.\.....\vc60.idb
.\.....\vc60.pdb
.\Debug
4

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