1/1*2+1/2*3+1/3*4+.1/99*100=?
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1/1*2+1/2*3+1/3*4+.1/99*100=?
1/1*2+1/2*3+1/3*4+.1/99*100=?
1/1*2+1/2*3+1/3*4+.1/99*100=?
1/1*2+1/2*3+1/3*4+.1/99*100
=1-1/2+1/2-1/3+1/3-1/4+.+1/99-1/100
=1-1/100
=99/100
=1-1/2+1/2-1/3+1/3-1/4+……+1/99-1/100
=1-1/100
=99/100
程序没错岂有不能运行之理....
main 写成 mian 了