Question

c program for factorial when 5different numbers are given​

Answer 1

Answer:

Factorial of a non-negative integer, is multiplication of all integers smaller than or equal to n. For example factorial of 6 is 6*5*4*3*2*1 which is 720.

Recursive Solution:

Factorial can be calculated using following recursive formula.

n! = n * (n-1)!

n! = 1 if n = 0 or n = 1

Recommended: Please solve it on “PRACTICE ” first, before moving on to the solution.

Following is implementation of factorial.

// C++ program to find factorial of given number

#include<iostream>

using namespace std;

// function to find factorial of given number

unsigned int factorial(unsigned int n)

{

if (n == 0)

return 1;

return n * factorial(n - 1);

}

// Driver code

int main()

{

int num = 5;

cout << "Factorial of " << num << " is " << factorial(num) << endl;

return 0;

}

// This code is contributed by Shivi_Aggarwal

Output:

Factorial of 5 is 120