Factorial tail recursion
nt factTR(unsigned int n, unsigned int a)
{
if (n == 0)
{
return a;
}
else
{
return factTR(n - 1, n * a);
}
}
int fact(unsigned int n);
{
return factTR(n, 1);
}
int main(void)
{
unsigned int a, n;
printf("Enter a positive number : ");
scanf("%u", &n);
a = fact(n);
printf("The factorial of %u is %u", n, a);
return 0;
}