```
#include<stdio.h>
main()
{
unsigned long int n,f;
printf("\nenter the number for which you want to find the factorial");
scanf("%d",&n);
f=fact(n);
printf("\nthe factorial of the number %d is %d",n,f);
}
fact(int n)
{
int k;
if(n==0)
return(1);
else
{
k=n*fact(n-1);
}
return(k);
}
```

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