# 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;
}