Programming to calculate a factorial number?

Answer 1

double factorial(double N)

{

double total = 1;

while (N > 1)

{

total *= N;

N--;

}

return total; // We are returning the value in variable title total

//return factorial;

}

int main()

{

double myNumber = 0;

cout << "Enter the number: ";

cin >> myNumber;

cout << endl << "Factorial of N is: " << factorial(myNumber);

return 0;

}

Answer 2

By the definition of a factorial, multiply all numbers up to the number given.

For example (using Java code):

int number = 5; // Sample value

long factorial = 1;

for (int i = 1; i <= number; i++)

{

factorial *= i;

}

System.out.println(number + "! = " + factorial);