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It is too difficult for beginners to strengthen training programming, which requires detailed language.
# Contains? & ltstdio.h & gt

# Contains? & ltstdlib.h & gt

int? Jiecheng (int? Numbers)

{

int? t? =? num

And (num? & gt? 1)

{

t? *=? -num;

}

Return? t;

}

int? main(int? argc,? Charles? **? argv)

{

Floating? e? =? 1.0,? n? =? 0;

int? f? =? 1;

And ((n? =? (float) 1/ jiecheng (f++))? & gt? 0.00000 1)?

{

e? +=? n;

}

printf("%6lf ",e);

Return? 0;

}