Find Iterative and Recursive Factorial using C++ Program!

factorial.cpp

@@ -0,0 +1,34 @@
+#include <iostream>
+using namespace std;
+
+// Function to calculate factorial iteratively
+unsigned long long factorialIterative(int n) {
+    unsigned long long result = 1;
+    for (int i = 1; i <= n; ++i) {
+        result *= i;
+    }
+    return result;
+}
+
+// Function to calculate factorial recursively
+unsigned long long factorialRecursive(int n) {
+    if (n == 0 || n == 1) {
+        return 1;
+    }
+    return n * factorialRecursive(n - 1);
+}
+
+int main() {
+    int num;
+    cout << "Enter a number to find its factorial: ";
+    cin >> num;
+
+    if (num < 0) {
+        cout << "Factorial is not defined for negative numbers." << endl;
+    } else {
+        cout << "Factorial (Iterative) of " << num << " is: " << factorialIterative(num) << endl;
+        cout << "Factorial (Recursive) of " << num << " is: " << factorialRecursive(num) << endl;
+    }
+
+    return 0;
+}