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Posted 3 Oct 2011

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Calculate the Factorial of an Integer in C#

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2.25/5 (6 votes)
3 Oct 2011CPOL
Use Recursion.int factorial(int n){ if(n<0) return -1; if(n==0 || n==1) return 1; return n * factorial(n-1);}
Use Recursion.
C#
int factorial(int n)
{
 if(n<0)
  return -1;
 if(n==0 || n==1)
  return 1;

 return n * factorial(n-1);
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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Anshul R
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India India
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Comments and Discussions

 
GeneralReason for my vote of 5 good Pin
mandar130519-Oct-11 1:25
Membermandar130519-Oct-11 1:25 
GeneralGuys, please. This is a tail-recursion and it won't be any s... Pin
ckbz18-Oct-11 22:13
Memberckbz18-Oct-11 22:13 
GeneralReason for my vote of 1 Besides, recursion for the sake of r... Pin
victorbos18-Oct-11 4:23
Membervictorbos18-Oct-11 4:23 
GeneralReason for my vote of 1 The time has long since passed when ... Pin
Chris Maunder4-Oct-11 3:47
cofounderChris Maunder4-Oct-11 3:47 
GeneralA standard and simple solution, my 5. However, the original ... Pin
Ed Nutting3-Oct-11 21:24
MemberEd Nutting3-Oct-11 21:24 
A standard and simple solution, my 5. However, the original would technically be faster as loops run faster than recursive calls to methods. This is due to the (comparatively) big overhead in time of making a method call. Something to bear in mind if your going for optimisation/speed, Ed Smile | :)

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