mrTux's blog

W output format!!
By mrTux, 11 years ago, In English

guys I was using double in my code but unexpectedly it's printed "nan" in output!!! can anyone tell me where did it originated form??

double y;

cout<<1-y; __ wrong output format Expected double, but "nan" found

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11 years ago, # |
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There is special value of double called NaN (Not-a-number). It may be caused by disallowed operations i.e sqrt(-1).

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11 years ago, # |
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In your case, it's probably due to division by zero (d) in y=p<n-1?0:u/d;. Weird...

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